First data from V220 / V281
V220 (unbalanced mode)
into 600 ohms load = 21 Veff = +28,5 dBu = 720 mW
into 50 ohms load = 13 Veff = +24,5 dBu = 3300 mW
V281 (balanced mode)
into 600 ohms load = 40 Veff = +34,2 dBu = 2700 mW
into 50 ohms load = 14Veff = +25 dBu = 4000 mW
Veff means Vrms, data was taken both channels driven !!
All transistorized amps from Violectric are current limited.
This is neccessary because otherwise the output voltage of 40 Veff into an 8 ohms load would mean 200 W !!
And the power supply should be able to deliver this.
To avoid heavy gear and large cases the current limitation ensures that 25 +15 W transformers are more than sufficient for V281.
It is hard to design an amp which is able to produce a very high output voltage swing for high impedance headphones on one hand,
and relative high output current for low impedance headphones on the other hand - while additional features like minimum noise, lowest distortion, highest slew rate and widest frequency range are maintained.
Also I dont think that it is really neccessary to have such high ouput voltage and such high output current to drive a headphone - but there are people out there driving a Dodge Viper in a speed limited country.
With V220 / V281 we want to show that ONE amp is able to drive ANY headphone to the full, be it HD800 or HE6 or K1000. Gear made for the "Autobahn" cant be wrong on other roads .
This is the technical approach - if the sound fits your needs you can only judge by yourself.
If there are additional questions - you´re welcome !