400W 3-channel Power Amplifier

Model: A 31

250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
Adjustable gain for up to +6db over THX Reference level
Unbalanced RCA and balanced XLR inputs
High bias class A/AB operation
Complementary MOSFET driver stage and JFET input stage

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Power amplifier is designed with Unbalanced RCA and balanced XLR inputs and it circuitry is designed by legendary John Curl. It has 1.5 kVA encapsulated toroid power transformer with independent secondary winding for each channel.

250 watts x 3 @ 8 Ohms / 400 watts x 3 @ 4 Ohms
Adjustable gain for up to +6db over THX Reference level
Unbalanced RCA and balanced XLR inputs
High bias class A/AB operation
Complementary MOSFET driver stage and JFET input stage
24 beta-matched 15 amp, 60 MHz bipolar output transistors
98,400 µF power supply filter capacitance
DC Servo and relay protection circuits
AC present, channel status, high temperature indicators
Heavy-duty 24k gold-plated 5-way speaker terminals
Auto turn-on by 12v trigger or audio signal

Maximum Frequency Response (Bandwidth): 20 kHz
Maximum Frequency Response (Bandwidth): 20000 Hz
Minimum Frequency Response (Bandwidth): 20 Hz
Minimum Frequency Response (Bandwidth): 0.02 kHz
Certifications: THX Ultra2
Number of Channels: 3
Depth: 20 in
Height: 7.60 in
Width: 17.50 in
Product Weight: 65 lbs
Shipping Weight: 79 lbs

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400W 3-channel Power Amplifier

Model: A 31

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