The triode stage used in the previous generation of Amp-1 is now upgraded by an innovating transistor gain stage, using very low component count (all discrete) and no global feedback.
A very high voltage (240Vdc) is used to give the maximum dynamic to the signal and its power supply is based on a discrete regulator as well.
The circuit uses 0.01% VAR Bulk Metal® Foil resistors from Vishay in the critical voltage gain stage.
The gain stage is then followed by an equally innovating and powerful transistor buffer, using no global feedback as well.
This design combines no global feedback, low noise, high gain (33dB), high bandwidth (400KHz) and high current (driving 1ohm) thanks to its 2500VA/25kg live-power transformer.
These characteristics produce a transparent, fast, live and natural sound without harshness and at the same time with punch and weight in bass.
The Amp-1-sublime amplifier is available as stereo amplifier with RCA inputs or as fully balanced monobloc with XLR input.
specifications of the stereo version:
stereo power amplifier
zero global feedback
fully discrete design
fully solid state
using 0.01% VAR Bulk Metal® Foil resistors from Vishay in the critical voltage gain stage
class AB with medium level of class A for moderate power consumption and for moderate heat in the room
2500VA, 26kg LIVE-POWER transformer with separate windings for left and right channel
separate left/right power supply rectifications and capacitor banks for an almost dual mono configuration (like two monoblocs in one chassis)
designed on Magico M6, on a 105dB large coax horn system and on Totaldac speakers
largest Mundorf binding posts
2x150W under 8ohm
2x300W under 4ohm
2x500W under 2ohm
stable under 1ohm
input impedance: 47Kohm
frequency response at -3dB: 0.06Hz to 400KHz
very low noise tested in real life on very high efficiency speakers (no hum on 105dB bass horns)
input offset tolerance without lowering the signal quality: +/-100mV
power consumption when music level is moderate: 175Watt @ 230V
453mm depth including connectors
-fully balanced from the XLR input to the speaker output
-an Amp-1-sublime monobloc can also be used as a stereo amplifier with RCA inputs
-600W under 8ohm
-1000W under 4ohm
-120V or 100V power (standard is 230V)
mobile phone: +33 6 18 03 14 08 (European time zone, Whatsapp compatible)