The MA100 Mono Power Amplifiers - pure SET magic

The path to the MA100 amplifiers

It all started with a passion for music, since my boyhood I attended concerts whenever possible and this still fills me with joy to this day. The fascination in tube amplifiers was not long in coming - it caught me very early on at the age of 17 when i started my first tube amplifier project.... a single power triode using the legendary Western Electric 300B which could still be purchased officially at that time.

The MA100 reflect the heart and soul of music…

The parallel single ended transformer coupled MA100 combines the best of both worlds I wanted to bring together: the power of two 300B's - to create a state-of-the-art triode parallel single ended reference mono power amplifier combined with the magic of a reference 300B single ended amplifier.


With our MA100 mono power amplifiers, three legendary power triodes are freely available for selection according to your taste as well as needs. If a little more is needed, the Legendary WE300B is also available upon request.

Interstage and output transformer

The output and Interstage Monoblock 300B Parallel Amplifier is a uniquely different amplifier — it is our highest and most extreme expression of single-ended amplification, exclusive for the true connoisseur audiophile. The output and interstage transformer design style is is in-house made by TSS Switzerland for our TSS top of the line MA50, MA100 and MA200 amplifiers use.


Very importantly, rather than an additional tube driver stage and the output transformer, our interstage transformer additionally offers a further high light, namely the galvanic separation of two stages, which represents an immense sound improvement, for ultimate musicality and authority, providing a level of realism and detail that you may not have experienced.

Chassis design

Our amplifier`s have an ultra sturdy up to 20mm CNC crafted aluminum chassis anodized with solid copper inlays for optimal grounding. Also the resonance improvements with such an enclosure are audible in the first bars of music.
Technical Details

Amplifier type:

Monoblock Power Amplifier Parallel Single Ended Triode

Output tube options:

2 x 2A3 triode  (2 x 300B triode - Optional on request)

Power output:

2A3: 12 Watts at 4/ 8/16 ohms / 300B: 20 watts at 4/ 8/16 ohms  

Driver tube:

2 x 46 tube triode connected

Rectifier tube: 

1 x 5u4g

Power Supply:

Paper in oil capacitors

Output & interstage transformers:

Custom Swiss made


Completely hand wired (point to point)


320mm wide x 380mm high x 600 mm deep


47 kilos per monoblock

Country of manufacture:

Handmade in Stansstad Switzerland