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Output Power| output power rating pentode | 15 W rms @ 12.3% THD, 16 ohm load |
|---|---|
| output power rating triode | 7 W rms @ 9% THD, 16 ohm load |
Sound Specifications| signal-to-noise ratio | 63 dB |
|---|---|
| input impedance | 1 Meg Ohm |
Equalization| EQ treble range | 14 dB @ 10 kHz |
|---|---|
| EQ middle range | 6 dB @ 1 kHz |
| EQ bass range | 10 dB @ 100 Hz |
| EQ presence range | 10.2 dB @ 100 Hz |
Tubes| preamp tubes | 2 x 12AX7/ECC83 |
|---|---|
| power tubes | 2 x EL84/6BQ5 |
| rectifier | Solid State |
Speaker Outputs| single speaker output | 1 x 16 ohms |
|---|---|
| dual speaker output | 2 x 8 ohms (8 ohms total load impedance) |
| quad speaker output | 2 x 4 ohms (4 ohms total load impedance) |
Power Requirements| power requirements 110/120 VAC | 50/60 Hz, 90 W |
|---|---|
| power requirements 220/240 VAC | 50/60 Hz, 90 W |
| AC mains fuse 100/120 VAC | T2.AL 250V Fuse |
Dimensions and Weight| size (H x W x D) | 9.6 in/243 mm x 18.0 in/460 mm x 9.0 in/228 mm |
|---|---|
| weight | 28.6 lb/13 kg |
Explains tube longevity factors like playing, vibration, travel, and initial signs of degradation.
Covers checking tubes for damage, bias voltage, and replacing power and driver tubes.
Details how to test preamplifier tubes for microphonics by tapping and listening for ringing.
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