Model 370 is an extremely low-noise, no-nonsense headphone amp. 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. You can use it as a main monitoring equipment in a recording studio.
It has a set of inputs that can be used either with XLR or
TRS (The reference balance for XLR is +4dBm, and for TRS -10dBm).
The power supply is AC 100V-240V, 50/60Hz for world wide use.
The residual noise in the zero volume position is less than 50É V, and less than 400É V in the full volume position. You can monitor the envelopes of pianissimo parts with the amazingly low-noise.
The channel imbalance is less than 0.5dB for the whole volume position. We can reduce it less than 0.3dB with the optional fader with a quadruplet of conductive plastic resistors. (See the right photos: the above is the standard volume. The below is the optional CP fader.)
( L : model370-CP Ā@R : model370 )
Model : Stereo headphone amp
Input : Electronically Balanced, XLR3-31, É”6.3 TRS x 2
Output : É”6.3 TRS x 2
Input Impedance : 3.7kÉ∂ (XLR)/ 12kÉ∂ (TRS)
Reference Input Level : +4dBm (XLR)/ -10dBm (TRS)
Maximum Input Level : +25dBm (XLR)/ +10dBm (TRS)
Maximum Output Level
(P-P) : Hi 12V, Low 9V (with 32É∂ loaded, 1kHz, THD+N 0.05%)
(RMS): Hi 4.2V, Low 3V (with 32É∂ loaded, 1kHz, THD+N 0.05%)
Maximum Output without Distortion : 600mW (with 32 ohm load, 1kHz, THD+N 0.05%)
Frequency Characteristics : 13Hz - 100kHz (-0.5dB)
Noise Level :
Less than 50É V (in the minimum volume position, 32É∂ loaded)
Less than 400É V (in the maximum volume position, 32É∂ loaded)
Channel Imbalance : Less than 0.5dB (in the whole position of the volume)
Cross Talk : More than 60dB (in the maximum volume)
Power Supply : AC100 - 240V, 50/60Hz
Electric Energy Consumption : 0.2A (with AC100V)
180mmW x 215mmD x 44mmH (except the rubber feet and projections)
180mmW x 245mmD x 46mmH (including the rubber feet and projections)
Weight : 1.7kg (without the power cable)