Kenzie Monos


***Please note that these come as a pair. 

Kenzie Monos, the 2ch version of Suolo Monos


The close of 2022 has brought ampsandsound out of its most productive period of development in the last 13 years. 2022 allowed us time to rethink existing designs and refine the aspects that worked best while pruning off those least used. The original Suolo mono was fantastic in its realization of the Kenzie circuit at our statement level of implementation, but included features for personal audio when despite most ownings using it exclusively for 2channel. Instead of including these unused feathers we brought the idea back with a more distilled conceptualization. The Kenzie Mono is intended for those high efficiency speaker lovers wanting the tone of DHT amps and specifically that of the venerable 45s.


The Kenzie pairs a 5751 common single triode input tube into the famous baby 300b called a 1626. Rectification is handled by the 6CA4. This combination of 6CA4, 5751 and 1626 means exclusive NOS/NIB tube options are affordable and plentiful.


Like many of our products, the Kenzie monos amplifier evolved from our earlier designs  and were a passion project or design study first.


The outstanding performance of the Kenzie monoa amplifier is made possible with custom wound ultra-high quality output transformers providing amazing frequency extension.


The Kenzie monos have more than enough power to drive efficient or moderate speakers alike. The Kenzie showcases the transformers on the chassis to frame in the unique 1626 single-ended tubes.


The Kenzie monos is one of the sweetest-sounding headphone amplifiers on the market. The 1626 is commonly referred to as the “Poor Man’s 300B”; offering a similar level of warmth, texture, and soundstage depth.


The 1626 is a WWII-era tube that was used as a transmitter tube in radar installations. The design is shy on pure output, but offers layers of texture and drive, and is paired with a massive choke and robust output transformers for ultra-quiet operation. As with all of our products, parts selection was crucial during this build and each chosen not for price, but for best quality and synergy.


Supplied Tubes:

Input tube: 5751 or 12AX7

Output tubes: 1626 or VT-137


Cathode Bias/automatic bias allows for easy tube changes without adjustment.

Compatible with most 8 ohm high efficacy speakers. Don’t be fooled by its modest power output, it has tone, frequency extension and current too.


Wood Chassis dimensions:10.75" Wide x 8.75" Deep



Input impedance is 10K ohm with alps pot

Input Sensitivity 520mV for full power out.

1.1 Watts RMS with 1626 Triode power tubes.

Bandwidth is 8 Hz to 35 kHz -3db @ 1 watt

Bandwidth at full power 1watts is 12hz to 18khz.

Power and Noise specs are dependent on tube selection.


All ampsandsound amps are handmade in Southern California with custom hand-wound output transformers and U.S. sourced parts.


Our amps are hand-made by a small team with quality being our first priority.


All ampsandsound amps are handmade in Southern California with custom hand-wound output transformers and U.S. sourced parts.

Our amps are hand-made by a small team with quality being our first priority.