Ypsilon Hyperion Mono

Hyperion is a high power hybrid monoblock amplifier. It combines high power output with no overall feedback and a simple and pure signal path of only two gain stages. The power rating is more than 370 W rms @ 8 ohms and 1200 W rms @ 2 ohms. The first 100W are Class A.


The Hyperion is a high power hybrid mono block amplifier, designed to drive any loudspeaker effortlessly and which takes advantage of the technologies and know-how that Ypsilon has developed over the years to extreme. Relaxed, holographic, impressive timbres, yet authoritative. One can describe Hyperion as a “Gentle Giant.”

The Hyperion combines high power output with no overall feedback and a simple and pure signal path of only two gain stages . It outputs more than 370 W@8 ohms and 1200@ 2 ohms.

The first gain stage uses a low impedance double triode coupled to the output stage with a wide bandwidth silver interstage transformer. It can take either the 6H30 or 5687 tubes and there are two sockets, so you get to choose which tube want to use. It also has an EZ81 rectifier tube. The input is transformer coupled with a specially made silver interstage transformer that provides a perfectly balanced input.

The Hyperion’s unique ‘balanced-single-ended’ output stage is biased in Class A for 100W@8ohms achieves an unmatched blend of effortless drive and dynamics with the refinement and transparency of a pure
single-ended design.

The Hyperion’s power supply is based on large size inductors for smooth filtering and multiple fast capacitors.The power supply transformer is build with high quality core material and winding techniques for ultra low mechanical , magnetic and electrical noise. All internal wiring is with Ypsilon’s own production silver wire with Teflon insulation.

Hyperion amplifiers offer a level of effortless drive and dynamics with transparency and refinement that will bring you closer to the musical performance.

Put bluntly, it is one of the very finest I have ever heard. Uniting power and finesse, refinement and seductiveness, this magnificent amplifier offers an enticing blend of the virtues of the Aelius and SET that my Wilson WAMM Master Chronosonic loudspeakers positively feast upon. There is a lucidity and lack of midbass bloat with the Hyperion that makes it an excellent match with the WAMM.

Jacob Heilbrunn, The Absolute Sound, 2018


Output Power 1KHz (115/230VAC)370W rms @ 8 ohm
650W rms @4 ohm
1150W rms@ 2 ohm
THD 1khz, 6H30 Pi @ 100 W/8 ohm0,7%
THD 1khz, 6H30 Pi @ 300 W/8 ohm1,2%
THD 1khz, 5687 /6Η6p @ 100 W/8 ohm1,0%
THD 1khz, 5687 /6Η6p @ 300 W/8 ohm1,9%
Bandwidth6Hz -80Khz @-3db
Input Transformer Peak+2,5db @ 50Khz
Output Impedance0,3 ohm
Input Impedance22 Kohm
GainX20 (26db)
InputsBalanced 1x XLR, 1x RCA
Power Consumption400W @ idle
Dementions425x635x300 (W xD xH) mm or
Weight95 Kgr per ch.

Other Resources

When listening to standup bass on jazz albums, for instance, I think the Hyperion provides a tonally rich sound without sacrificing any alacrity. Since I’m in the camp that thinks that, in one way or another, all gear has a coloration, this doesn’t bother me. Quite the contrary. I’d rather that a component err on the side of musicality, bliss, and all the other things that can gently propel you into a meditative state when listening to your system. The Hyperion does this. There are other amps that will play even louder or go deeper in the bass or provide even greater grip on the notes. But the whole package that the Hyperion offers makes it quite irresistible. So if you’ll permit me a little hyperbole—and since when has that ever figured in the high end?—I’d say that Demetris Baklavas has produced something worthy of the Greek gods. If you’re currently resting in base camp on your audio journey and look- ing for a proper ascent, then the Hyperion may allow you to steal a march on the path that leads to that elusive sonic Mount Olympus.

Jacob Heilbrunn, The Absolute Sound, 2018

With the Hyperion, I must again characterize Baklavas as an electronics design genius whose name deserves mention alongside the more familiar names you probably know. He’s seriously underrated, and deserving of greater acclamation.

When you make your living by listening to audio gear, at some point you inevitably suffer burnout. While I can’t live for long without hearing music in my listening room, there are times when I crave silence to avoid such a burnout. But during the time the Hyperions were here, I think I did more listening for pleasure alone than I’ve done in years.

Michael Fremer, Stereophile, 2018