Linear Tube Audio Z40 integrated

Our most powerful amp, which can power almost any speaker you throw at it, combined with a Berning-designed preamp and Fern & Roby case. For those who demand the best, but want to keep things simple. The Z40 Integrated amplifier delivers the magic, realism, and 3D soundstage of our patented ZOTL technology, all in one (gorgeous) package.

A single-component solution, the Z40 Integrated amplifier incorporates the acclaimed ZOTL40 Reference power amplifier, a Berning-designed preamplifier, and LTA’s digital control system–beautifully packaged in a Fern & Roby-designed case.

The Z40i generates up to 51 watts per channel. This means the Z40i can easily drive speakers with sensitivity ratings at or above 85db for critical listening. For smaller rooms or non-critical listening, it can drive speakers rated down to 80db. In any configuration, listeners enjoy startling realism, plentiful bass, low noise, plus gorgeous mids and highs.


Prices in Euro incl. vat excl. freight:

Linear Tube Audio Z40 integrated



MM Riaa

MM/MC Riaa

High Quality Puritan Audio Laboratories mains cable 1 meter

High Quality Puritan Audio Laboratories mains cable 1,5 meter







Key specifications:

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

Speaker Output: 4 WBT copper speaker binding posts

Headphone Outputs: Low: 220mW per channel @ 32 ohms, High: 2.6W per channel @ 32 ohms

Tape Monitor: 1 stereo tape monitor out, 1 stereo tape monitor in - both Cardas RCA

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 4-ohm load: 51W, 0.5% THD

Power output with 8-ohm load: 46W, 0.5% THD

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

Amplifier class: Push-pull Class AB

Voltage gain (8-ohm load): 23dB

Size: 16 inches wide, 5 1/8 inches tall, 16 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 KT77

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:

Inputs: MM or MC
MM Gain: 46 db fixed
MC gain: 10db/20db additional (56 db total or 66 db. selectable by jumpers)
MM loading: 47K ohms
MC loading: 10, 20, 30, 50, 100, 200, 470 ohms selectable by dipswitch
100pf, 220pf, 330pf selectable by dipswitch

Speaker sensitivity & room recommendation.

LTA amplifier owners have found great enjoyment using their amps with a variety of speaker outside of the below ranges. The below are guidelines, not rules. If you have questions about your specific speakers, chances are someone we know has tried them. Don’t hesitate to reach out with questions about your specific setup.

Critical listening environments: 85db sensitivity and above

Smaller rooms / lower volume levels / non-critical listening: 80db sensitivity and above.

Also, don’t forget we have a 14-day no-questions-asked return policy.

A couple of reviews & Videos:

Wow Factor ApS

Address: Vesterbrogade 5b

Postal Code: 3250

City: Gilleleje

Country: Denmark.

Phone: +45 3219 4490.

Office hours Monday - Friday CET: 10-16.00

Company vat / id: DK41479108

Manager: Maricel Ma-asin

Bank: Nordea. Reg: 2255, Account 6294618684

IBAN: DK4820006294618684


By boat: 56°07'34.6"N 12°18'37.2"E