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Empress Effects Buffer+ Stereo User Manual
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Empress Effects Buffer+ Stereo User Manual

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Summary of Contents for Empress Effects Buffer+ Stereo

  • Page 1 user manual...
  • Page 2 On top of all that, configurable signal routing ensures that the Buffer+ Stereo will handle just about any rig you can throw at it. So before you plug in, read The Initial Setup guide to ensure your Buffer+ Stereo is ready to rock! - Cody Gilchrist, lead designer.
  • Page 4 Controls input pads: pads the input by either 6dB or 12dB. This can be useful for padding a very hot signal from an fx loop or active instrument. It can also be useful for matching levels from di erent instruments (ie. passive and active pickups, or single coil and humbucking guitars).
  • Page 5 at a Glance noise lter: helps eliminate certain types of noise from your signal path, especially white noise and hiss generated from digital pedals. It will reduce this noise on any pedal that is inside its dedicated loop. For stereo noise reduction, make sure to set both the noise lter switches to the same setting.
  • Page 6 Initial Setup / Startup Configuration The Startup Configuration is where you'll set the Buffer+ Stereo's operating mode, choosing from 12 available modes. Here, you can also configure an external momentary switch to either activate the boost circuit (on/off) or to instantly mute the output for silent tuning.
  • Page 7 2 seconds. The blue boost LED will flash quickly, followed by the corresponding mode LED to acknowledge your selection. The Buffer+ Stereo will now enter your selected mode every time it starts up, unless you change it again by...
  • Page 8 Mode 1 - Un-summed Loop Ins This is the standard operating mode for a stereo setup. In this mode, loop in 1 and loop in 2 are sent to out 1 and out 2 respectively. A wet/dry rig can be created by using a mono effects chain returning to loop in 1 and leaving in 2 and loop in 2 disconnected.
  • Page 9 Mode 2 - Summed Loop Ins This mode uses summing to take stereo effects and bring them back to a mono output. Perhaps the most useful case for this mode would be for someone who sometimes runs a stereo rig, but also plays gigs with a mono rig.
  • Page 10 Mode 3 - Loop In 1 Only This mode is designed for a mono effects chain feeding 2 amps. In this mode, loop in 1 is sent to both out 1 and out 2. loop in 2 cannot be used. This mode is for using a mono in/mono out effects chain and sending the signal to two amps.
  • Page 11 Mode 4 - Unsummed/Summed Loop Ins Combination In this mode, when the stomp function toggle switch is set to AY, in the A state, loop in 1 and loop in 2 are summed and sent to out 1. In the Y state, loop in 1 and loop in 2 are sent to out 1 and out 2 respectively, and are therefore not summed.
  • Page 12 Mode 5 - Loop Select This mode allows you to select between loop in 1 and loop in 2. When the stomp function toggle switch is set to AB, in the A state, loop in 1 is sent to both out 1 and out 2. In the B state, loop in 2 is sent to both out 1 and out 2.
  • Page 13 Mode 6 - Loop Summing Select This mode allows you to switch between two states. In the first state, loop in 1 and loop in 2 are not summed, and are sent to out 1 and out 2 respectively. In the second state, loop in 1 and loop in 2 are summed and sent to both out 1 and out 2.
  • Page 14 Mode 7 - Instrument Select, mono return to both outputs This mode allows you to have two separate instruments plugged into in 1 and in 2, and use the stomp switch to switch between them. In this mode, loop in 2 is sent to both outputs. - The stomp function toggle switch is not used.
  • Page 15 Mode 8 - Instrument Select, stereo return and summed loops This mode allows you to have two separate instruments plugged into in 1 and in 2, and use the stomp switch to switch between them. In this mode, loop in 1 and loop in 2 are summed and sent to both outputs.
  • Page 16 Mode 9 - Instrument Select, stereo return and un-summed Loops This mode allows you to have two separate instruments plugged into in 1 and in 2, and use the stomp switch to toggle between them. In this mode, loop in 1 and loop in 2 are sent to out 1 and out 2 respectively, and are not summed.
  • Page 17 Mode 10 - Instrument Select - separate rigs, shared effects This mode allows you to connect two separate rigs (for example, an electric guitar and amplifier to in 1 and out 1 respectively, and an acoustic guitar and PA system to in 2 and out 2 respectively) and a single mono effects chain, and use the stomp switch to select which rig is active.
  • Page 18 Modes 11 & 12 - FX Loop Mode 11 (boost at amp input) This mode allows you to buffer an effects chain in front of your amp, as well as in the amp's fx loop. When the stomp function toggle is set to boost, the fx loop is always engaged and the boost can be toggled on/off with the stomp switch.
  • Page 19 - The AB position of the stomp function toggle switch is not used. - Both noise filters must be set the same for effective noise filtering. Mode 12 (boost at amp's FX loop return) This mode functions exactly the same as Mode 11, with the only difference being that the boost is applied to the amplifiers fx return as opposed to the preamp input.
  • Page 20 1 and out 2. The boost LED will illuminate red to indicate that you are in silent tuning mode. Press the stomp switch again to exit silent tuning mode. The Buffer+ Stereo will return to whichever state it was in prior to entering silent tuning mode.

  • Page 21: Legal Stuff

    Legal Stuff FCC Compliance Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.

  • Page 22: Troubleshooting

    Please Note: The Empress Buffer+ Stereo requires at least 150mA of current to function properly. Any power supply rated at 9V DC, supplying negative tip polarity ( ) and at least 150mA of current should work.
  • Page 23 In this situation, you may want to put your gain pedals before the Buffer+ Stereo, or just use a bit of eq in the loop to bring back the treble.

  • Page 24: Specifications

    Specifications Input Impedance 1: 10kΩ - 1MΩ Input Impedance 2: 1MΩ Output Impedance 1: 47Ω Output Impedance 2: 600Ω Frequency Response (-3dB) : 20Hz - 38kHz THD: 0.02% Noise: -104dB Input Voltage: 9VDC Required Current: 150mA Power Input Connector: 2.1mm Barrel Connector Height (enclosure only): 1.5”...