H. POWER INPUT: Connect included power cord to a
grounded outlet in accordance with voltage and frequency
ratings listed on rear panel of amplifier.
I.
FUSE: With power disconnected, replace a blown fuse only
with one of the type and rating specified on rear panel of
amplifier.
J.
POWER: Turns amp on and off. When first turning amplifier
on, leave OPERATE/STANDBY switch (K) in STANDBY (down)
position for 30 seconds while tubes warm, then set switch
to OPERATE (up) position to take amp out of STANDBY
mode. Before turning POWER switch off (down position),
put amp in STANDBY mode for 10 seconds
K. OPERATE/STANDBY: When taking a break from playing
and before turning amplifier off as noted above (J), put amp
in STANDBY mode—which helps prolong tube life—by
setting this switch to the STANDBY (down) position. Return
switch to OPERATE (up) position when resuming play after
a break. Also as noted above (J), amp should remain in
STANDBY mode for 30 seconds after initial power-up.
L.
POWER LEVEL: FULL position provides maximum output
power; 1/4 position reduces power to approximately four watts.
CAUTION: To prevent electric shock hazard, do not connect to mains power supply while top cover is removed.
TYPE
PR 4837
PART NUMBERS
2256020000 (120V, 60Hz) USA
2256024000 (230V, 50Hz) UK
2256027000 (100V, 50Hz) JPN
POWER REQUIREMENT
100 watts
POWER OUTPUT
15 watts RMS into 4, 8 or 16 ohms
INPUT IMPEDANCE
>1MΩ
OUTPUT IMPEDANCE
4Ω/8Ω/16Ω (selectable)
FUSES
100V units, F1.6A L, 250V
FOOTSWITCH
Single-button channel-switching footswitch (included)
TUBES
Two EL84 output tubes, four ECC83S preamp tubes
DIMENSIONS
Height: 7" (17.8 cm)
WEIGHT
15 lbs. (6.8 kg)
REAR PANEL FEATURES
M. ADJUST BIAS/BIAS TEST POINTS: NOT USER SERVICEABLE.
These features should only be used by an authorized service
technician to adjust the bias of the amplifier tubes.
N. EFFECTS LOOP: Connect SEND to effects input and
RETURN to effects output.
O. FOOTSWITCH: Connect included single-button footswitch
here for channel switching (overrides front panel switch).
P.
RESONANCE: Adjusts the power amp's low-frequency
response.
Q. LOAD IMPEDANCE: Selects output impedance (4, 8 or 16
ohms) to match speaker load.
R. SPEAKER OUTPUT: For connection to speaker cabinet.
NOTE: A speaker must always be plugged into the speaker jack
when amplifier is on, or damage may occur. Switch amplifier
off or to STANDBY (K) when changing speaker connections or
impedance settings.
S.
LED ON/OFF (NOT SHOWN): Push recessed button on side
of chassis to illuminate green and red channel backlighting.
SPECIFICATIONS
2256021000 (110V, 60Hz) TW
2256025000 (220V, 50Hz) ARG
2256029000 (220V, 60Hz) ROK
120V units, F1.25A L, 250V
Width: 12.5" (31.2 cm)
Product specifications subject to change without notice.
2
2256023000 (240V, 50Hz) AUS
2256026000 (230V, 50Hz) EUR
220-240V units, F0.63A L, 250V
Depth: 6" (15.3 cm)