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INPUT JACK
TO MAINTAIN WARRANTY, USE MESA/BOOGIE TUBES WHEN REPLACEMENT IS NECESSARY
FOR CUSTOMER SUPPORT, PLEASE CALL 707-778-6565 MONDAY-THURSDAY 9-5 PST, OR EMAIL US AT INFO@MESABOOGIE.COM
BEFORE CHANGING TUBES FLIP POWER & STANDBY SWITCH TO OFF
POWER TUBES
PREAMP TUBES
12AX7
V5
12AX7
V6
12AX7
V4
12AX7
V3
12AX7
V2
12AX7
V1
EL84
V8
EL84
V7
FRONT OF CHASSIS
TUBE REPLACEMENT
Recto-Verb 25 COMBO
V1A - Input Stage CH1 & CH2
V1B - 3rd Gain Stage CH1
V2A - 2nd Gain Stage CH1 & CH2
V2B - 3rd Gain Stage CH2
V3A&B - Tone Control Driver CH2
V4A&B - Driver / Phase Inverter
V5A - FX Loop Return
V5B - FX Loop Send
V6A - Reverb Return
V6B - Reverb Drive
25 Watts = V7, V8 Pentode
10 Watts = V7, V8 Triode
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