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Ypsilon SET 100 Ultimate
Product Features:

SET100 Ultimate is a single-ended hybrid amplifier of 2 gain

stages, output power of 120W wrms with low output impedance (0.25 Ohm). It has the magic midrange of a small S.E.T amplifier

with the scale, authority, micro and macro detail that no amplifier has ever achieved until now. It uses a specially designed

single-ended mosfet output stage, coupled with a double c-core

amorphous transformer. SET100 Ultimate has power and drive

with transparency, musical involvement and above all with music

sounding naturally.


With only 2 gain stages in the signal path, the level of immediacy

and transparency is unequaled by designs using more than 2 gain stages. Having no overall feedback, the distortion is kept

comparably low while the output impedance is sufficient enough

to drive real world loudspeakers.

The first stage uses a high transconductancetriode, the SIEMENS EC8010 selected for its sonic capabilities and reliability. It is

powered by a separate power supply with tube rectification and

choke regulation. This stage is transformer coupled with the

output stage. This interstage transformer is a state of the art

component. It uses a proprietary double c- core material and is

silver wound using a Swiss made pure silver enamel wire.

Sonically it is virtually a nonexistent component. The output stage and all internal wiring is hard wired with silver wire extruded to our specifications.

The power supply is designed as a system paying attention to

every smallest detail that could affect the sound quality. It uses a

low noise E-I power transformer, a big size differential mode

power supply choke and 4 pole electrolytic capacitors. It is also

hard wired with silver wire.


Mechanical, magnetic and electrical noise is very low contributing to the quiet operation of the system. A darker background is

produced from which sounds suddenly emerge like from real life.

SET100 Ultimate is an amplifier that produces music in its true

natural scale, but above all it brings you as close as possible to the music event, to feel the music rather than hear it, to be touched

and overwhelmed by the deeper feeling, with music emerging and not only sounding in a clear undistorted way. Compared with

conventional amplifiers it is more direct sounding and musical

with more instrument body, lower frequency extension,

frightening dynamics and most of all magically three dimensional. Its strong point is that in large orchestra crescendos it sounds

transparent and totally unstressed until it reaches full power.

" Single Ended In All It's Glory "

Product Specifications:

Output Power:

120W rms @ 8.0 Ohm

130W rms @ 5.6 Ohm

100W rms @ 4.0 Ohm



8 Hz - 80 kHz / -3db


Output Impedance:

0.25 Ohm


Input Impedance:

50K Ohm



x40  (32db)


Power Consumption:
400W Continuous

Input Tube:
Siemens EC8010

Rectifier Tube:
6CA4 / EZ81


9.5 x 24 x 26.5"  (WxHxD)



240 lbs. per mono amp

Ypsilon SET 100 Ultimate

  • Ypsilon Electronics are special order items. We do not hold new inventory. Average wait times are 2 to 3 months as these are hand built in Greece. Please contact us to place an order. Based on the unique nature of these products additional shipping charges may apply.

  • We are here to help you. Please contact us for questions or to assist you with a purchase. Our products are unique and the buying experience, along with the delivery process, can be tailored to meet your needs. 

    Contact us here.

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