Replacement Tube Selection & Bias
This amplifier features Yorkville's auto-balancing / auto-matching tube biasing technology. As a
result, when the time comes to replace the tubes in your Yorkville amplifier, there is no need to pay a
premium for a matched set – nor does the bias need to be adjusted when you use a different brand.
We make no claims as to which brands of tubes might sound best, but with auto-balancing / auto-
matching, you are free to experiment without any need for concern that the amplifier or tubes will
be distressed. Please note that auto-balancing / auto matching cannot fully compensate for different
types of tubes - 6L6/5881s versus 6CA7/EL34s, for example.
Please note that although auto-balancing / auto matching allows you the freedom to select unmatched tubes from a variety
of manufacturers, it may not be able to fully compensate for the use of a non-equivalent model or part number of tube
– 6L6/5881s versus 6CA7/EL34s, for example. Use of non-equivalent tubes may result in unpredictable performance.
S p e c i f i c a t i o n s
Electronics
Vacuum Tubes
2 x 5881WXT (alt 6L6B)
3 x 12AX7 (alt 7025A)
DC powered filament supply on preamp tubes
Bias Supply
Autobalancing
Power Output
40 Watts RMS
Speaker
YCV40: 12 inch Celestion® speaker
YCV40T: 2x10 inch Celestion® speakers
Channels
one lead & one clean channel
Input Impedance
1 Meg ohm
Tone Controls
Separate tone controls on both channels
(Treble, Bass, & Middle)
Presence and Reverb on Master Section
Reverb
Accutronics® long-reverb with dual-springs
Power Supply
Fully regulated
Connectors
Input Jack
1/4 inch phone jack
Send Jack
Balanced 1/4 inch TRS
(Tip-positive / Ring-negative / Sleeve-ground)
Return Jack
Unbalanced 1/4 inch phone jack, 10kohms
Speaker Jacks
Two 1/4 inch phone jacks
Footswitch Jack
1/4 inch TRS, accepts a standard,
latching dual-footswitch & connecting cable
Cabinet
Cabinet Construction
all plywood
Covering
Leatherette
Grille
Perforated 18 gauge painted steel
with silver cloth covering
Dimensions (WxHxD)
23.0 inch x 18.5 inch x 9.0 inch
58.4 x 46.9 x 22.8 cm
Weight
45 lbs (20.4 kg)
Power Requirements
120V
60Hz 1.0A
230V
50Hz 0,5A
Warranty
Two-year, unlimited (
transferable warranty*
(
valid in USA and Canada only
Footswitch Included
Two button (Channel Select / Boost)
with separate LED indicators
)
even if you break it!
)