Linear Tube Amplification ZOTL Ultralinear+ Integrated Amplifier. Unit is in excellent physical and functional condition and sold as new for $9,150.00. Unit has original box, packing, manual, remote control and power cord. 
 

ZOTL Ultralinear+ Integrated Amplifier Overview

• LTA’s most detailed & refined integrated amplifier

• Micro-detail across the frequency range increases realism and encourages long listening sessions

• 20 watts per channel, perfect for speakers 88dB or above

• 1 XLR Input, 4 RCA inputs, plus optional phono stage input for turntables

• Subwoofer Output

For those who demand the best, but want to keep things simple. The ZOTL Ultralinear+ Integrated amplifier delivers the magic, realism, and 3D soundstage of our patented ZOTL technology, all in one (gorgeous) package.

A single-component solution, the ZOTL Ultralinear+ Integrated amplifier incorporates the acclaimed ZOTL Ultralinear+ power amplifier, a Berning-designed preamplifier, and LTA’s digital control system–beautifully packaged in a Fern & Roby-designed case.

The ZOTL Ultralinear+ Integrated generates 20 watts per channel. This means it can easily drive speakers with sensitivity ratings at or above 88db for critical listening. For smaller rooms or non-critical listening, it can drive speakers rated down to 85db. In any configuration, listeners enjoy startling realism, plentiful bass, low noise, plus gorgeous mids and highs.

 

What’s New in the Plus+ Version

LTA is proud to announce the next generation, and first-ever upgrade, of the Ultralinear flagship amp. Introducing, the ZOTL Ultralinear+ Integrated Amplifier.

After trying over two dozen component combinations, and countless hours of listening tests and comparisons, the new ZOTL Ultralinear+ Integrated Amplifier improves the tone and texture across all frequencies, and there is more detail and clarity around the performers.

These sonic upgrades are achieved through adding a massive 100,000µF of additional capacitor storage and changing the resistors in the audio path to non-magnetic Audio Note Tantalum and Holco Metal Film resistors, each type and value specifically chosen for each location.

Stereo subwoofer output has also been added. For those who prefer mono subwoofer output, that can be requested at no additional charge.

 

ZOTL Ultralinear+ Integrated Amplifier Details

The ZOTL Ultralinear+ is the latest ZOTL amplifier design by David Berning, utilizing his Zero-hysteresis output transformerless audio design and his unique power supply.

The  ZOTL Ultralinear+ amplifier outputs 20 watts per channel using 17JN6 tubes, a Compactron-style TV sweep tube that can't be easily used in traditional transformer-coupled amplifier designs. The ZOTL circuit is able to take advantage of these great-sounding, under-utilized tubes, and in this case, does so in what can be considered the only ultralinear amp without traditional output transformers.

David designed the amplifier specifically for high efficiency speakers. A balance between triode and pentode mode, the ultralinear topology delivers a less forward presentation which is "more pleasing to listen to.”  The ZOTL Ultralinear+ delivers accuracy, detail and realism.  Pianos sound like pianos. The bass is controlled but fluid. Very transparent, no hum and very dynamic.

The power supply is an advanced switching supply optimized for audio that only David Berning deploys. 

All the benefits of ZOTL technology, including 3 times the tube life, 1/3 the heat, a super wide frequency response of 8hz -60Khz, and a under 2 ohm output impedance to play nicely with all speakers, are all included. There is also a sophisticated speaker protection system to prevent damage to the amplifier and speakers if there ever was a tube issue.

Fern and Roby Audio designed the casework featuring front and rear panels milled from slabs of aluminum, Cardas RCAs, WBT copper binding posts, with all markings laser engraved.

David Berning designed, hand-built by Linear Tube Audio, with casework by Fern and Roby.  

 

SPECIFICATIONS

Inputs: 4 single-ended Cardas RCA stereo, 1 balanced input using two 3-pin XLRs

Speaker Output: 4 Cardas speaker binding posts

Headphone Outputs: Low: 300mW per channel @ 32 ohms, High: 2W per channel @ 32 ohms

Tape Monitor: 1 stereo tape monitor out, 1 stereo tape monitor in

Subwoofer Output: Stereo subwoofer output (Mono option available upon request)

Front Panel Controls: 7 brass touch switches (power, input, tape monitor, up, down, menu/select, back), volume control, and headphone speaker switch

Remote Control: All front panel functions using paired Apple TV Remote

Volume Control: 100 stepped attenuator (smallest step 1/1000th of total value) using Vishay Dale 1% precision resistors

Output impedance: 1.2 ohms

Input impedance: 47k

100V / 120V / 240V operation: Auto-switching

Hum and noise: 94dB below full output (measured at 20Hz-20kHz)

Power output with 8-ohm load: 20W, 0.5% THD

Frequency response (8-ohm load): 6Hz to 60kHz, +0, -.5dB

Amplifier class: Push-pull Class AB

Size: 17 inches wide, 5 1/8 inches tall, 18 inches deep (including connectors)

Net weight: Amplifier: 18 lbs./8.2 kg

Finish: Aluminum case

Tube complement: 2x 12AU7 preamp, 2x 12AX7, 2x 12AU7, 4x 17JN6

Home Theater Function can select any input for fixed volume

Display: 16 Levels of brightness and programmable 7-second time out

MM/MC Phono Stage: All settings configurable via front-panel digital menu system. 

Inputs: MM or MC
Preamp Gain (MM/MC): 34dB, 42dB, 54dB
SUT Gain (MC only): 20dB, 26dB
Resistive Loading (MC only):
20dB loading options (ohms): 20, 50, 75, 150, 200, 270, 300, 400, 470
26dB loading options (ohms): 20, 40, 50, 75, 90, 100, 120
MM loading: 47K ohms
Capacitive Loading: 100pF, 220pF, 320pF