4.1
Specifications
Input Line Voltage – 120VAC, 60Hz
Power Consumption – 55W
Line Fuse Rating – 1A, Time Lag
B+ Fuse Rating – 1/4A, Time Lag
Output Power – 18W RMS
Output Impedance – 4, 8, 16 Ohms
Tube Types: V1, V2, V4 – 12AX7 (ECC83)
V3 – 12AT7 (ECC81)
V5, V6 – 6BQ5 (EL84)
Dimensions: Amp Head – 20”W x 8.25”H x 8.25”D
Combo 1x12” – 24”W x 19.875”H x 9.5”D
Combo 2x12” – 28”W x 19.875”H x 10.5”D
Weight: Amp Head – 17lbs
Combo 1x12” – 35lbs
Combo 2x12” – 39lbs
4.2
Vacuum Tube Replacement
Generally speaking, tubes last a very long time. Output tubes should last for
approximately 2000 hours or one year of daily use. Preamp tubes can last
upwards of 15-30 years and do not need to be replaced unless they become
noisy with popping or microphonic squeals through your speakers. Your
amp comes stock with JJ - 12AX7 preamp tubes and a matched pair of
Mullard EL84 output tubes. The phase inverter tube (V3) is a JJ - 12AT7,
low gain tube. Using a different type of tube other than a 12AT7 for V3 can
result in high frequency oscillations. We do not recommend any substitutes.
ALWAYS disconnect the power to the unit and let the tubes cool before
replacement.