ZOTL Ultralinear poweramp

The latest amplifier design by David Berning. Striking a balance between triode and pentode mode, the new ZOTL Ultralinear amp provides the unique advantages of each while maintaining all the benefits of the ZOTL circuitry.

The ZOTL Ultralinear amplifier delivers uncolored detail and realism without sacrificing natural mids and powerful, controlled bass. The ZOTL Ultralinear is our most detailed and refined amp. Many listeners compare the presentation to SET amps, while offering much more power. Listeners enjoy the less forward, distortion-free presentation that is “more pleasing to listen to” the Ultralinear offers.


Prices in Euro incl. vat excl. freight:




High Quality Puritan Audio Laboratories mains cable 1 meter

High Quality Puritan Audio Laboratories mains cable 1,5 meter





Key specifications:

Inputs: One pair L & R Cardas RCA

Outputs: One set of stereo WBT speaker binding posts

Amplifier class: Push-pull class AB

Power output: 20 watts channel 8 ohms

Sensitivity: 1.2V RMS for 20 watts output

Frequency response: 8hz to 60khz - +0, -.5db

Output impedance: 1.6 ohms

Input impedance: 50k

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

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

Gain: 21db

Stereo/Mono: Switchable Stereo-Mono

Dimensions: 17 inches (43 cm) wide, 5 inches (12.7 cm) tall, 13.875 inches (35.2 cm) deep

Weight: 17.5 lbs or 7.9 kg

Tube complement: Two 12AU7 and two 12AX7 input tubes, four 17JN6 power tubes - Autobias for all tubes. All tubes NOS.

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: 88db sensitivity and above

Smaller rooms / lower volume levels / non-critical listening: 85db 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