Output Power Rating:
450 watts rms @ 4 ohms, 3% THD
275 watts rms @ 8 ohms, 3% THD
Signal to Noise Ratio:
80 dB (20 Hz–30 kHz), ref: 1% THD+N into a
4 ohm load with –20 dB stimulus (“normal”)
Maximum Gain:
63 dB @ 1 kHz, tone controls centered
Tube Complement:
12AX7 (4), 12AU7 (1)
Tone Controls:
Bass: +12 / –12 dB @ 50 Hz
Midrange: +15 / –15 dB @ 220 Hz, 450 Hz,
800 Hz, 1.6 kHz or 3 kHz
Treble: +14 / –19 dB @ 5 kHz
Graphic EQ Level +10 / –10 dB
Graphic EQ Range:
33 Hz: +15 / –15 dB
80 Hz: +8 / –8 dB
150 Hz: +8 / –8 dB
300 Hz: +8 / –8 dB
600 Hz: +8 / –8 dB
900 Hz: +8 / –8 dB
2 kHz: +8 / –8 dB
5 kHz: +9 / –9 dB
8 kHz: +10 / –10 dB
Bright Switch +6 dB @ 2 kHz
Ultra Hi Switch +6 dB @ 5 kHz
Ultra Lo Switch +2.5 dB @ 50 Hz
–12 dB @ 560 Hz
+1.5 dB @ 5 kHz
Footswitch Jack:
Graphic EQ On/Off, Mute On/Off [Tip = Mute, Ring = EQ]
Power Requirements:
~100–120 VAC, 50–60 Hz, 390 W [Domestic]
~200–240 VAC, 50–60 Hz, 390 W [Export]