MASS-Kobo Model 394II Balance Headphone Amp (Like New)

MASS-Kobo Model 394II Balance Headphone Amp

model 394 is a full balanced amplifier from input to output.

You can enjoy natural and real sounds with it.
It is developed based on a special circuit, because we needed a headphone amp which can reproduce the musical sources without almost any noise in a process of development of condenser microphones.

It has a set of inputs that can be used either with XLR Balance Input or RCA Unbalance Input (Unbalance Input convert to Balance signal by inside amp.

XLR Balanced input have reference level select switch.
You can choice +4dBm from professional player or -10dBm from consumer player.

The power supply is AC 100V-240V, 50/60Hz for world wide use.

Model 394 can also drive Abyss AB1266 to the best sound quality.

Specifications
Model : Full Balanced Stereo headphone amp
Input : Electronically Balanced = XLR3-31 , Unbalance = RCA
Output : Balance = XLR4-31 x 1 or XLR3-31 x 2(L,R) , Unbalance = φ6.3 TRS x 2(High or Low)
Input Impedance : 3.7kΩ (XLR)/ 12kΩ (RCA)
Reference Input Level : +4dBm/-10dBm (XLR)/ -10dBm (RCA)
Maximum Input Level : +25dBm (XLR)/ +10dBm (RCA)
Maximum Output Level
(P-P) : Balance = Hi 24V, Low 18V (with 32Ω loaded, 1kHz, THD+N 0.05%)Unbalance = Hi 12V, Low 9V (with 32Ω loaded, 1kHz, THD+N 0.05%)
(RMS): Balance = Hi 8.5V, Low 6V (with 32Ω loaded, 1kHz, THD+N 0.05%) Unbalance = Hi 4.2V, Low 3V (with 32Ω loaded, 1kHz, THD+N 0.05%)
Maximum Output without Distortion : Balance = 2.2W , Unbalance = 600mW (with 32 ohm load, 1kHz, THD+N 0.05%)
Frequency Characteristics : 13Hz - 100kHz (-0.5dB)
Power Supply : AC100 - 240V, 50/60Hz
Electric Energy Consumption : 0.5A (with AC100V)
Size :
285mmW x 230mmD x 50mmH (except the rubber feet and projections)
285mmW x 230mmD x 52mmH (including the rubber feet and projections)
Weight : 2.9kg (without the power cable)