8PAGE
REAR PANEL : Controls & Features
AC SOCKET (Quick Disconnect Style)
Far Left On Underside Of Chassis This is the A.C. MAINS Power Cord Socket.
The standardized removable power cable supplied with your amp can only be plugged in one way. Always connect the male
end to a grounded wall socket with the proper voltage present (117 Volts on U.S.A. Models). To Avoid The Risk Of Shock,
Never Alter The Power Cable in any way. Altering the Power Cable will void your warranty and put you at risk while leaving your
amplifier open to the possibility of damage.
MAIN FUSE
This is the A.C. (Alternating Current) main fuse and provides amplifier circuit protection from power and/or
rectifier tube failure as well as from A.C. voltage fluctuations. ALWAYS replace a blown fuse with one of the specific rating and
type as (conveniently) printed on the back of your amplifier right next to the fuse holder. NEVER INSTALL
A FUSE OF A HIGHER RATING than the value printed on the back of your amplifier. Doing so will very likely
produce damage well beyond the original reason your fuse blew in the first place.
A power tube short or failure is often the cause of a blown fuse. Position yourself behind the amplifier and
follow the cold-start procedure mentioned in the STANDBY switch section of this manual. Watch the power
tubes as you flip the STANDBY to the ON position (and KEEP YOUR HAND ON THE STANDBY switch). If
a power tube is going bad or is arcing you will often see it as you power up! Flip the STANDBY switch to
STANDBY immediately if you see any signs of a “runaway” tube(s) and replace the faulty power tube(s) and the fuse as necessary.
If you see nothing abnormal as you move the STANDBY switch to ON, it is possible that a power tube shorted ‘temporarily’
and caused the blown Fuse. Occasionally, whether from just luck or from cooling down, a short in a power tube ‘reconnects’
itself temporarily and can operate normally again, but this tube should be considered faulty and replaced as soon as possible
to ensure uninterrupted performance. If you can identify a tube that is arcing or shorting by the method mentioned above and
the tubes have minimal use, consider replacing the obviously faulty or failed tube and leaving the others in place.
If you haven’t changed tubes for a while after heavier use, this failure may be telling you it’s time to change all your power tubes.
Save any working but used tubes as your new spares.
Spare fuses (of the proper type and rating) are a must for the fabled cord bag along with spare tubes. Always have both on
hand – at the gig or at home – since tubes decide when it’s time to stop working – not your gig schedule. Spare tubes and
fuses can be worth their weight in gold should you ever experience a tube failure.
FX LOOP
Your Recto-Verb 25 benefits from 40 years of high-performance amp design, and the FX Loop featured here is
a result of that experience and expertise.
The FX Loop is wired in Series with the dry signal and as long as you are using processors of good quality,
you should experience seamless interfacing with no tonal degradation. That said, anything you insert in this
extremely sensitive junction of an amplifier (between preamp and power section) may have the potential to
slightly alter the sound. Also, every company that builds processors has its own way of doing things and there
are controls and features that empower, and some that make things more complicated while adding question-
able sonic benefit. We suggest taking your amp and trying it with the processor you are auditioning to make
sure you will have great performance when they are coupled.
WARNING:
Unplug power
before servicing
fuse or chassis
GAIN TREBLE MID PRESENCE
MASTER
POWER
STANDBY
CLEAN
PUSHED
VINTAGE
FT
SW
CH 1
CH 2
MODERN
25 WATTS
10 W
120 V~
60 Hz
1 A
1 A
SLO
BLO
8 OHM
(COMBO) (USE WITH TWO 8OHM SPKRS)
4 OHM 4 OHMSEND RETURN REVERB
EXT
REVERB
CH 2 CH 1
AMPLIFIER
44YV
25 W
10 WATTS
D
U
A
L
RECTO-VERB 25
TUBE GUIDE
6 x 12AX7
2 x EL 84
PATENTED
6,621,907
7,602,927
SPEAKERS
LOOP
RECTO-VERB 25
VACUUM TUBE
AMPLIFIER
HANDCRAFTED
IN PETALUMA,
CALIFORNIA
WARNING:
Unplug power
before servicing
fuse or chassis
GAIN TREBLE MID PRESENCE
MASTER
POWER
STANDBY
CLEAN
PUSHED
VINTAGE
FT
SW
CH 1
CH 2
MODERN
25 WATTS
10 W
120 V~
60 Hz
1 A
1 A
SLO
BLO
8 OHM
(COMBO) (USE WITH TWO 8OHM SPKRS)
4 OHM 4 OHMSEND RETURN REVERB
EXT
REVERB
CH 2 CH 1
ON
ON
BASS
AMPLIFIER
44YV
25 W
10 WATTS
D
U
A
L
RECTO-VERB 25
TUBE GUIDE
6 x 12AX7
2 x EL 84
PATENTED
6,621,907
7,602,927
SPEAKERS
LOOP
RECTO-VERB 25
VACUUM TUBE
AMPLIFIER
HANDCRAFTED
IN PETALUMA,
CALIFORNIA
INPUT
FT SW
WARNING:
Unplug power
before servicing
fuse or chassis
GAIN TREBLE MID PRESENCE
MASTER
POWER
STANDBY
CLEAN
PUSHED
VINTAGE
FT
SW
CH 1
CH 2
MODERN
25 WATTS
10 W
120 V~
60 Hz
1 A
1 A
SLO
BLO
8 OHM
(COMBO) (USE WITH TWO 8OHM SPKRS)
4 OHM 4 OHM
SEND RETURN
REVERB
EXT
REVERB
CH 2 CH 1
ON
ON
BASS
AMPLIFIER
44YV
25 W
10 WATTS
D
U
A
L
RECTO-VERB 25
TUBE GUIDE
6 x 12AX7
2 x EL 84
PATENTED
6,621,907
7,602,927
SPEAKERS
LOOP
RECTO-VERB 25
VACUUM TUBE
AMPLIFIER
HANDCRAFTED
IN PETALUMA,
CALIFORNIA