Teac AI-301DA - Amplifier Manual

What's in the Box

If one of the following is missing or damaged, contact your dealer (shown on the back cover).
Power cord × 1
Remote control unit (RC-1313) × 1
Batteries for remote control (AAA) × 2
Owner's manual (this document) × 1

Product registration

Customers in the USA, please visit the following TEAC website to register your TEAC product online.
http://audio.teac.com/support/registration/

Before Use

Placement of the unit

• Do not put anything on top of the unit.
• Avoid placing the unit in direct sunlight or close to any source of heat, such as a radiator, heater, open fireplace or amplifier. Also avoid locations that are subject to vibrations or exposed to excessive dust, cold or moisture. o Place the unit in a stable location near the audio system that you will use with it.
• As the unit could become warm during operation, always leave sufficient space around it for ventilation. When installing this unit, leave a little space (at least 5 cm or 2") between it and walls and other devices in order to allow good heat dissipation. When placing it in a rack, for example, leave at least 5 cm (2") open above it and 10 cm (4") open behind it. Failure to provide these gaps could cause heat to build up inside and result in fire.
• You may stack this unit with a UD-301 or other H01 series units. However, if heat should cause the protection circuit to be activated and sound output stops suddenly, place this unit on top and with sufficient distance between it and walls and other devices in order to improve heat dissipation. o Do not move the unit during use.
• The voltage supplied to the unit should match the voltage printed on the rear panel. If you are in any doubt regarding this matter, consult an electrician.
• Do not open the body of the unit as this might result in damage to the circuitry or cause electric shock. If a foreign object should get into the unit, contact your dealer.
• When removing the power plug from the wall outlet, always pull directly on the plug; never yank on the cord.
• If a TV is turned on while the unit is on, static might appear on the TV screen depending on the characteristics of the TV broadcast signal. This is not a malfunction of the unit nor of the TV. If this occurs, put the unit into standby.

Maintenance
If the surface of the unit becomes dirty, wipe it with a soft dry cloth. If the unit becomes very dirty, dampen a soft cloth slightly with a diluted neutral cleanser and thoroughly wring out any excess fluid before using the cloth to wipe the unit.
For safety, disconnect the power cord from the outlet before cleaning.

• Never spray liquid directly on the unit.
• Do not use thinner or alcohol as they could damage the surface of the unit.
• Avoid allowing rubber or plastic materials to touch this product for long periods of time, because they could damage the cabinet.

Remote Control Unit

The included remote control allows this unit to be operated from a distance.
Point the remote control at the main unit's remote sensor from a distance of 16 feet (5 meters) or less.

• Remote control operation might not be possible if there are any obstacles between it and the unit.
• If direct sunlight or strong artificial illumination shines on the remote sensor, the remote control might not function. If that is the case, move this unit to another location.
• If the remote control is operated near other appliances that generate infrared rays, or if another remote control device using infrared rays is used near the unit, it might operate incorrectly. Moreover, the other device might also operate incorrectly.

Battery Installation

1. Remove the battery compartment cover.
   
2. Insert two AAA (R03, UM-4) dry batteries. Make sure that the batteries are inserted with their positive and negative ends oriented correctly.
3. Close the cover.

Battery Replacement
If the effective range of the remote control decreases, the batteries are exhausted. In this case, replace both batteries with new ones. For detailed information about the collection of batteries, please contact your local municipality, your waste disposal service or the point of sale where you purchased them.

Front Panel Overview (AI-301DA)

1. Standby/on () button
   Press this button to turn the unit on and put it in standby. The blue indicator lights when the unit is turned on.
   When this unit is in standby mode, it still consumes some power, which is why the term "standby" or "standby mode" is used instead of "off".
2. Remote control sensor
   Receives signals from the remote control. When operating the remote control, point it at this sensor.
3. SOURCE button
   Each time this button is pressed, the source changes.
4. Input source indicators
   The indicator for the source that is selected lights.
   These indicators blink when the input signal is not a digital audio signal or is a digital audio signal in a format other than PCM or DSD (such as Dolby Digital, dts or AAC). (LINE 1 and LINE 2 indicators do not blink.)
5. PHONES jack
   Connect a headphone's 6.5mm (1/4") stereo plug to this jack.
6. VOLUME knob
   Use this knob to adjust the volume. To increase the volume, turn the knob clockwise. To decrease the volume, turn the knob counterclockwise.

• Connect the power cord's plug to the wall outlet only after all other connections are complete.
• Read the instructions of each device that you intend to use with this unit.

• Check the impedance of your speakers. Connect speakers with an impedance of between 4 ohms and 8 ohms.
• The red speaker terminals are positive (+) and the black speaker terminals are negative (–).
• Generally, the + wire of the speaker cable is marked to distinguish it from the – wire of the cable. Connect the marked wire to the red + terminal and the unmarked wire to the black – terminal.
• The metal portions of the two separate wires should not touch. If they touch an electrical short might occur. Shorted wires can create a fire hazard or cause equipment failure.
• Be sure to insert each plug securely. To prevent hum and noise, avoid bundling the cables together with the AC power cord or other cables.

How to connect speakers

1. Turn the terminal cap counterclockwise to loosen it. The speaker terminal caps cannot be fully removed from the unit.
2. Insert the wire into the terminal and turn the terminal cap clockwise to securely connect it:
   
   • Make sure none of the wire insulation is under the terminal and only the bare, stripped wire is touching the terminal.
3. Confirm that the cable is fastened securely by gently pulling the cable.

Connecting with banana plugs
You can also make connections using commercially-available banana plugs. First, connect the banana plugs to the speaker cables and then connect the plugs to the terminals.

• Keep the caps tightened when in use.
• Carefully read the instructions for the banana plugs that you are using.

Notice about the European model
In accordance with European safety regulations, connecting banana plugs to speaker terminals is not allowed on European models. The holes into which banana plugs could be inserted have been covered with black caps. Connect speakers using bare wires or spade lugs. If a black cap should become separated from its terminal, return it to its original position.

Connections

After all connections are complete, connect the power cord's plug to the AC wall outlet.

• Read the instructions of each device that you intend to use with this unit.
• To avoid hum and noise, do not bundle the connection cords.
• Be sure to connect each plug securely.

1. Analog audio input jacks (LINE 1, LINE 2)
   Use these to input 2-channel analog audio signals. Connect an audio output device such as a cassette deck or CD player to these jacks using commercially-available RCA cables.
   Connect the R jack of this unit to the right (R) jack of the audio output device and the L jack of this unit to the left (L) jack of the audio output device.
   
2. USB input port
   Connect to the USB port of a computer to input digital audio from it. Use a commercially-available USB cable.
   • Install the dedicated TEAC driver software on the computer before connecting the unit.
3. Maintenance connector (UPDATE)
   This connector is only for maintenance use. Unless directed by our service department, do not connect anything to it.
4. SUBWOOFER OUT jack
   If you want to use a subwoofer, connect it to this terminal.
   • The VOLUME knob on the front unit controls the output level.
5. DIGITAL IN audio input connectors (COAXIAL, OPTICAL)
   Input digital audio. Connect to the digital audio output connectors of digital audio output devices.
   COAXIAL: RCA digital coaxial cable
   OPTICAL: Optical digital cable (TOS)
6. Power cord connector (~IN)
   Connect the supplied power cord to the power cord receptacle.
   After all other connections are complete, connect the power cord's plug to a wall outlet.

Do not use any power cord other than the one included with this unit. Use of other power cords could result in fire or electric shock. Unplug the power cord when you are not going to use the unit for several weeks.

Remote Control Unit Overview

1. MUTE button
   Press this button to mute the sound temporarily. To restore the sound, press it again.
2. Standby/on () button
   Press this button to turn the unit on and put it in standby.
3. Input source selection buttons
   Use these buttons to select the playback source.
4. VOLUME (−/+) buttons
   Use these buttons to adjust the volume.

You can control both this AI-301DA and a PD-H01 using the RC-1313 remote control. Only the buttons used for the AI-301DA are explained in this document.

Automatic power saving (APS) function

This unit has an automatic power saving function.
The operation of this function depends on the automatic power saving (APS) setting and the selected input source.

When automatic power saving (APS) is on
If there is no digital input signal from the selected source and no operation occurs for about three minutes, the unit will enter sleep* mode. Inputting the selected digital signal or pressing the standby/on () button on the unit or remote control will wake the unit (automatic power on function).
The unit will enter standby** mode if no operation occurs for about 30 minutes while in sleep mode. When in standby mode, inputting the selected digital signal will not turn the unit on again. Press the standby/on () button on the main unit or the remote control to turn the unit on again.

When automatic power saving (APS) is off
If the input source is USB, Bluetooth, COAXIAL or OPTICAL
If there is no digital input signal from the selected source and no operation occurs for about three minutes, the unit will enter sleep* mode.
Inputting the selected digital signal or pressing the standby/on () button on the unit or remote control will wake the unit (automatic power on function).
The unit will not enter standby mode even if no operation occurs when in sleep mode.

If the input source is LINE 1 or LINE 2
Unit will never enter standby or sleep modes.
*Power consumption in sleep mode is about 1.2 W.
**Power consumption in standby mode is 0.5 W or less.

Checking the automatic power saving setting
If automatic power saving is off, all the input indicators will light temporarily when the unit is turned on.

Setting the automatic power saving function
When the unit is on, press and hold the button for five seconds until all the input indicators light or turn off.
No indicators lit: APS on
All indicators lit: APS off

Playback

1. Press the standby/on () button to turn the unit ON.
   
2. Press the SOURCE button repeatedly to select a source.
   Each time the SOURCE button is pressed, the source changes as follows:
   
   The indicator lights for the selected source.
   
   • The input source indicators blink when the input signal is a digital audio signal in a format other than PCM or DSD (such as Dolby Digital, dts or AAC). If this is the case, check to see if the connected digital audio output device has a "PCM" setting for the digital output format. Refer to the operation manual for that device to make this setting.
   • When using this unit with a Windows computer, before setting this unit to USB and playing back audio files on the computer, you must install the dedicated driver on that computer.
3. Start playback on the connected source device.
   Refer to the operation manual of the playback device that you are using.
4. Adjust the volume.
   Turn the VOLUME knob or use the VOLUME buttons on the remote control to adjust the volume to the appropriate level.
   

Bluetooth®

1. Press the standby/on () button to turn the unit on.
   • You can also use the remote control standby/on () button.
     
2. Press the SOURCE button one or more times to select Bluetooth ().
   This sets the source to Bluetooth.
   
   • The unit can pair and connect with other Bluetooth devices and its Bluetooth indicator blinks.
   • The unit retains the same source mode even when in standby. So, this step can be skipped if the unit had already been in Bluetooth mode when it was put into standby.
3. Pair or connect with another Bluetooth device.
   Pairing with another Bluetooth device
   Pairing this unit with another Bluetooth device is necessary the first time you connect with that Bluetooth device.
   To prepare this unit to pair, put it into Bluetooth mode and press the SOURCE button for at least 3 seconds. When this unit is ready to pair, its indicator flashes rapidly.
   After preparing this unit to pair, conduct pairing using the other Bluetooth device.
   If pairing has already been completed, follow the instructions in "Connecting with an already paired Bluetooth device".
   On the following page, examples of connecting smart phones as one type of Bluetooth device are given. For details, refer to the operation manual of the Bluetooth device you are using.

Connecting with an already paired Bluetooth device
When the input source of this unit is set to "Bluetooth" and the other Bluetooth device is on, the Bluetooth function will be active and they will connect automatically. If they do not connect automatically, however, you can connect them manually as shown in the following examples with smart phones.

• If a request for a passcode appears on the screen of the Bluetooth device, enter "0000" (four zeros).
• When this unit and the other Bluetooth device are connected, the Bluetooth indicator stops blinking and stays lit.
• When pairing or connecting with another Bluetooth device, they should be within a few meters of each other. If they are too far apart, pairing and connection afterwards might become impossible.
• If the Bluetooth indicator on this unit continues to blink for 10 minutes, it will automatically enter standby mode. To use the unit again, you must press the button to turn it on.
• When Bluetooth input is selected for this unit, the Bluetooth device that was last connected to it will automatically be connected again. If you want to connect with a different Bluetooth device, conduct pairing with that device.

NOTE
Regardless of the connection status of this unit and the other Bluetooth device, if the Bluetooth indicator continues blinking for a long time, restart both this unit and the other device and then reconnect them.

4. Start playback on the other Bluetooth device.
   • Confirm that the volume is turned up on the other Bluetooth device. If you do not turn up the volume on the playback device, no sound might be output from this unit.
5. Turn the VOLUME knob to adjust the volume.
   
   • You can also do this with the VOLUME buttons on the remote control.
   • Depending on the connected Bluetooth device, you might not be able to adjust the volume. For details, refer to the operation manual of that Bluetooth device.

Selecting songs
Selecting the previous song
Press the button on the Bluetooth device.

Selecting the next song
Press the button on the Bluetooth device.

Pausing playback
Press pause or a similar control on the Bluetooth device.

Muting playback
If you want to temporarily mute the volume of this unit, press the MUTE button on the remote control.
Press the MUTE button on the remote control again to return to the previous volume level.

Putting the unit into standby mode.
Press the button on the main unit or the remote control to put this unit into standby mode before turning the other Bluetooth device off.

Playing back music on a computer

When using Windows
Installing the driver on the computer
In order to play audio files stored on a Windows computer through this unit, you must install a dedicated driver on that computer beforehand. Download the dedicated driver from the TEAC Global Site: http://teac-global.com/

This unit can be used with the following Windows operating systems. Windows XP (32-bit)
Windows Vista (32/64-bit)
Windows 7 (32/64-bit)
Windows 8 (32/64-bit)
Windows 8.1 (32/64-bit)
Operation with other operating systems is not guaranteed.

Install the dedicated driver software before connecting the computer to this unit using a USB cable.
If a computer is connected to this unit before the driver is installed, proper operation will not be possible. Moreover, after doing this, proper driver installation might not be possible. Furthermore, if using Windows XP, the computer might start operating noticeably slower and require restarting.
For instructions about driver installation procedures, please access the Downloads page from the TEAC Global site (http://teac-global.com/).
Depending on the combination of hardware and software, proper operation might not be possible even with the above operating systems.

About the transmission mode
This unit connects using high-speed asynchronous mode. Transmittable PCM sampling frequencies are 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz and 192 kHz. 2.8 MHz and 5.6 MHz DSD are also supported.
When properly connected, you will be able to select "TEAC USB AUDIO DEVICE" as an audio output from the computer.
In asynchronous mode, the audio data sent from the computer is processed using this unit's clock, reducing data transmission jitter.

Downloading the TEAC HR Audio Player application
If you need, you can download our free TEAC HR Audio Player application, which supports DSD file playback, from the TEAC Global Site (both Mac and Windows versions available).
http://teac-global.com/

Playing back audio files from a computer

1. Connect this unit to the computer using a USB cable.
   
   • To use a Windows computer, you must install the dedicated driver beforehand.
   • Use a cable with a connector that matches that of this unit.

• The computer and this unit cannot control each other.
• Do not do any of the following when playing back an audio file via USB. Doing so could cause the computer to malfunction. Always quit the music playback software before doing any of the following.
• Disconnect the USB cable
• Turn this unit off o Change the current input selection
• When playing back an audio file via USB, computer operation sounds will also be output. If you do not want these sounds to be output, make appropriate settings on the computer to turn them off.
• If you connect this unit with the computer or you set this unit's input to "USB" after starting music playback software, music files might not play back properly. If this occurs, restart the music playback software or restart the computer.

Troubleshooting

If you experience any problems with the unit, please take a moment to read this page before seeking repair. If you still have a problem, contact the retailer from which you purchased the product.

General

Since this unit uses a microcontroller, external noise and other interference can cause the unit to malfunction. If this occurs, unplug the power cord, wait for a while, and then turn the power back on to restart operations.

Specifications

Amplifier Section
Maximum power output
60 W + 60 W (JEITA 10%, 20 – 20 kHz, 4 Ω)
30 W + 30 W (JEITA 10%, 20 – 20 kHz, 8 Ω)
Rated power output
43 W + 43 W (JEITA 0.1%, 20 – 20 kHz, 4 Ω)
22 W + 22 W (JEITA 0.1%, 20 – 20 kHz, 8 Ω)
Total Harmonic Distortion..0.01% (1 kHz, 8 Ω, 1W)
Signal-to-noise ratio
LINE IN.. 95 dB (IHF-A/LPF 20kHz 1kHz 2V input)
Frequency Response....2 Hz – 100 kHz (–5 dB)

Digital audio input
Coaxial digital jack (75Ω) × 1...........0.5 Vp-p
Optical digital connector × 1
−24.0 to −14.5 dBm peak USB port (type B) connector............USB 2.0
Supported sampling frequencies (PCM)
COAXIAL digital
32/44.1/48/88.2/96/176.4/192 kHz
OPTICAL digital.........32/44.1/48/88.2/96 kHz
USB.........32/44.1/48/88.2/96/176.4/192 kHz
Supported bit lengths
COAXIAL digital...................... 16/24 bits
OPTICAL digital...................... 16/24 bits
USB..............................16/24/32 bits
Supported sampling frequencies (DSD)
2.8/5.6 MHz
(only when connected by USB)

Bluetooth
Bluetooth version.................... V2.1+EDR
Output................................. Class 2
Supported profiles................ A2DP, AVRCP
Supported A2DP codecs
SBC, AAC, Qualcomm® aptX™ audio

Headphones output
Rated output. 100 mW + 100 mW (32 Ω, 1 kHz)
Total harmonic distortion...............0.005%

General
Power supply
Model for Europe............AC 230 V, 50 Hz
Model for USA/Canada......AC 120 V, 60 Hz
Power consumption...................... 38 W
External dimensions (W × H × D)
215 × 61 × 254 mm (8 3/8" × 2 3/8" × 10")
(including protrusions)
Weight.........................2.1 kg (4 5/8 lb)
Operating temperature..........+5°C to +35°C
Operating humidity................ 5% to 85%
(no condensation)
Storage temperature...........−20°C to +55°C

Accessories
Power cord × 1
Remote control unit (RC-1313) × 1
Batteries for remote control (AAA) × 2
Owner's manual (this document) × 1

• Design and specifications are subject to change without notice.
• Weight and dimensions are approximate.
• Illustrations may differ slightly from production models.

IMPORTANT SAFETY INSTRUCTIONS

TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

• DO NOT REMOVE THE EXTERNAL CASES OR CABINETS TO EXPOSE THE ELECTRONICS. NO USER SERVICEABLE PARTS ARE INSIDE.
• IF YOU ARE EXPERIENCING PROBLEMS WITH THIS PRODUCT, CONTACT THE STORE WHERE YOU PURCHASED THE UNIT FOR A SERVICE REFERRAL. DO NOT USE THE PRODUCT UNTIL IT HAS BEEN REPAIRED.
• USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
  IN USA/CANADA, USE ONLY ON 120 V SUPPLY.

1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.

• The apparatus draws nominal non-operating power from the AC outlet with its POWER or STANDBY/ON switch not in the ON position.
• The mains plug is used as the disconnect device, the disconnect device shall remain readily operable.
• 
  should be taken when using earphones or headphones with the product because excessive sound pressure (volume) from earphones or headphones can cause hearing loss.

• Do not expose this apparatus to drips or splashes.
• Do not place any objects filled with liquids, such as vases, on the apparatus.
• Do not install this apparatus in a confined space such as a book case or similar unit.
• The apparatus should be located close enough to the AC outlet so that you can easily reach the power cord plug at any time.
• If the product uses batteries (including a battery pack or installed batteries), they should not be exposed to sunshine, fire or excessive heat.
• 
  for products that use replaceable lithium batteries: there is danger of explosion if a battery is replaced with an incorrect type of battery. Replace only with the same or equivalent type.

Products with Class I construction are equipped with a power supply cord that has a grounding plug. The cord of such a product must be plugged into an AC outlet that has a protective grounding connection.

Precautions concerning batteries
Misuse of batteries could cause them to rupture or leak leading to fire, injury or the staining of nearby things. Please read and observe the following precautions carefully.

• Be sure to insert the batteries with correct positive (¥) and negative (^) orientations.
• Use batteries of the same type. Never use different types of batteries together.
• If the remote control is not used for a long time (more than a month), remove the batteries to prevent them from leaking.
• If the batteries leak, wipe away the leakage inside the battery compartment and replace the batteries with new ones.
• Do not use batteries of types other than those specified. Do not mix new batteries with old ones or use different types of batteries together.
• Do not heat or disassemble batteries. Never throw batteries into fire or water.
• Do not carry or store batteries with other metallic objects. The batteries could short circuit, leak or explode.
• Never recharge a battery unless it is confirmed to be a rechargeable type.

The nameplate is located on the bottom of the unit as shown below.

Bluetooth® notes

When using this unit with a mobile phone or other Bluetooth devices, they should be no more than about 10 m (33 ft) apart. Depending on the circumstances of use, however, the effective transmission distance might be shorter.
Wireless communication with every device that supports Bluetooth wireless technology is not guaranteed.
To determine the compatibility between this unit and another device that supports Bluetooth wireless technology, refer to that device's operation manual or contact the shop where you purchased it.

Using the TEAC Global Site

You can download the dedicated drivers necessary for this unit from the TEAC Global Site: http://teac-global.com/

1. Open the TEAC Global Site.
2. In the TEAC Downloads section, click the desired language to open the Downloads website page for that language.
   NOTE
   If the desired language does not appear, click Other Languages.
3. Click the product name in the "Products" for the users in Europe or "Search by Model Name" section for the users in North America or areas other than those mentioned above to open the Downloads page for that product.
4. Select and download the dedicated drivers that are needed.