Technical Specifications; Basic Specifications; Design Information - ModWright Instruments Ambrose One Owner's Manual

Technical Specifications:

Tube Complement: (2) 6922 signal tubes, (2) 5AR4/GZ34 (or equivalent) rectifier tube.
Gain: ~10dB.
Input Impedance: 30Kohm.
Output Impedance: ~110ohm.
Frequency Response: 20Hz – 150Khz (-1dB)
Noise Level: -120dB.
Weight: 29 lbs. (34 lb. packed)
Dimensions: 17-1/2"W x 12-1/2"D x 4-3/4"H.

Basic Specifications:

(2) Pair XLR inputs, (2) pair RCA Inputs.
(2) Pair RCA Main outs, (2) pair Balanced XLR Main outs.
(1) Pair RCA HT/BP inputs.
Power, Input Select, Mute, Phase, Home Theater Bypass (HT/BP) and volume.

Design Information:

Power Supply: Fully dual mono, tube rectified, choke input current regulated, regulated
DC heaters and discrete FET regulated B+ voltages.
Gain Stage: Lundahl transformer coupled input and output, fully balanced, Class A, zero
negative feedback.
Power Sequence: Mute-on delay turn-on sequence with soft-start B+ supply.
Volume Control: Remote Control Alps motorized volume potentiometer.
Balanced XLR and RCA Single Ended inputs and outputs.
Absolute Phase control.
Typical operation does NOT invert absolute phase.
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