Advertisement
Quick Links
microZOTL Preamplifier
USER GUIDE:
Linear Tube Audio
Takoma Park, MD, USA
301-448-1534
hifi@lineartubeaudio.com
WARNING: For safety, the cover of this amplifier should be secured
at all times.
This amplifier contains extremely high voltages and the user should
not attempt to service the amplifier.
Furthermore, this amplifier
generates radio-frequency energy that can interfere with
communications equipment.
Introduction
The microZOTL Preamplifier is a Class A tube preamplifier and
headphone amplifier utilizing ZOTL (Zero-hysteresis Output
Transformer-Less) technology. After years of refining and testing,
LTA has created the microZOTL Preamplifier. This is the highest
expression of the microZOTL circuit as both preamp and
headphone amp in a rack-friendly form factor.
Advertisement
Subscribe to Our Youtube Channel
Related Manuals for Linear Tube Audio microZOTL
Summary of Contents for Linear Tube Audio microZOTL
- Page 1 Introduction The microZOTL Preamplifier is a Class A tube preamplifier and headphone amplifier utilizing ZOTL (Zero-hysteresis Output Transformer-Less) technology. After years of refining and testing, LTA has created the microZOTL Preamplifier. This is the highest expression of the microZOTL circuit as both preamp and headphone amp in a rack-friendly form factor.
- Page 2 7. Linear Tube Audio reserves the right to improve or change its products without obligation to modify previously manufactured units.
- Page 3 Specifications Circuit Type: Push-Pull Class A Power Output: 1W (4 Ohm), 0.5W (8 Ohm) Input Sensitivity: 0.6V RMS for full output Input Impedance: Headphone Output impedance: 2 Ohms Preamp Output Impedance: 50 Ohms Gain: 10.3dB (4 Ohm load) 12.4dB (8 Ohm load) Noise: -90dB Frequency Response:...
- Page 4 Quick Start Remove preamplifier from the box. Attach the power cable to the IEC connector and plug into an outlet. Turn the power switch next to the IEC connector on. This will not turn the preamplifier on (unless you have Power-on Override turned on, which you can do in the menu).
- Page 6 The Tape Output always functions as an unattenuated output directly from the selected input. When Tape Monitor is selected via the button on the front panel, the microZOTL Preamplifier outputs the signal from the Tape Input, while still sending the selected, non-...
- Page 7 User Interface and Controls The front panel features a power switch, input switch, volume knob, and display. The remote control is able to adjust volume, mute, and access a menu with more configurable options. Remote Control Up and Down Buttons: Volume Up and Volume Down. They can be held down or used in a single step mode.
- Page 8 Menu The menu is accessed via the Menu button on the remote control. Scroll with the up and down buttons to see menu options. Pause on an option to see the entire title scroll by. Balance: Use the right and left remote buttons to adjust the balance.
- Page 9 Display Timeout = Off, Home Theater Mode = None, and Display Brightness = 8, and Remote Left-Right Arrow buttons set to Not Active. Tube Heater Voltage Jumper Settings The microZOTL Preamplifier comes with selected old-stock 12SN7 tubes as its standard output tubes. By changing the...
- Page 10 12AU7 tubes for the 12AT7s. Do not use 12AX7s. When replacing the tubes, use matched pairs. Fuses: The microZOTL Preamplifier has a fuse on the audio board and two fuses in the LPS+. All are 5x20mm. There is a 2.5A Fast Blow fuse on the audio board and there are two 4A Slow Blow fuses in the IEC inlet of the Power Supply.
- Page 11 NOTES...
Need help?
Do you have a question about the microZOTL and is the answer not in the manual?
Questions and answers