	Fully Automatic Tube Amp Bias Meter NO GUESSING, NO CALCULATORS PURPOSE BUILT FOR TESTING BIAS AND BALANCE	Indispensable tool for Vintage Stereo Amps Guitar Amps PA Amps Musical Instrument Amps Jukebox Amps Easily Set Bias On Almost Any Vacuum Tube / Valve Audio Amplifier

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Easily check the Bias and Balance
on most any vacuum tube amp

Setting the Bias on a
SA-100 Fisher
With 7189 Tubes

Vintage Marshal Amp Bias Adjustment EL34 Tubes Valves

Setting the Bias on a
JMP MK2
With EL34 Tubes "Valves"
Note improper bias setting
from previous tube set

Fender® Marshall® Peavy® Laney® Fisher® Dynaco® DIY
Guitar, JukeBox, Monoblock, Stereo Amps and more
See tube compatability for each probe.

PLACES TO VISIT

ACCURATELY CHECK AND ADJUST
PROPER OUTPUT TUBE BIAS AND BALANCE
IF YOU HAVE A TUBE TYPE AMP THIS TOOL IS INDISPENSABLE

MAKES SIMPLE BIAS PROBES OBSOLETE

ACCURATELY DISPLAYS PLATE VOLTAGE
ACCURATELY DISPLAYS CATHODE CURRENT
ACCURATELY DISPLAYS CALCULATED WATTAGE
AUTOMATICALLY FOR UP TO 2 TUBES

DIRECT READING SIMPLY SET THE BIAS FOR PROPER DISSIPATION / BALANCE AND YOU ARE DONE

A BETTER VALUE THAN SIMPLE PROBES

SELECT YOUR OWN BIAS PROBE CONFIGURATION
OCTAL, NOVAL (9 PIN) OR BOTH

WORKS WITH AC OR DC FILAMENTS

DON'T HACK UP A VINTAGE VACUUM TUBE AMP JUST TO CHECK BIAS OR BALANCE

INDESPENSIBLE TOOL FOR HI-FI, GUITAR, JUKEBOX OR JUST ABOUT ANY TUBE AMP

OPTIONAL DIRECT READING WATTAGE PROBE
DISPLAYS WATTS INTO 2, 4, 8 AND 16 OHM LOADS

See manual for more information
Additional Bias Information

Click here to read more comments:

"Randy, I received everything (and it works flawlessly)...
I truely think the Compu-Bias is a wonderful product. I did 4 amps with the new unit with no issues of anykind.. Way cool and very quick. I think even better than the product is your support. I will always go out of my way to "good mouth" both the Compu-Bias and Mission Electronics to anyone that will listen to me..
Thanks so much"
Al A 04-18-07 %%"...The cable being in front of the key on the probe makes it easier to "aim" too, nice.
I'd like to thank and congratulate you for the outstanding level of support here! My Bassman really sings now......."
C.J CANADA 05-01-07

OCTAL ADAPTOR PROBE
WORKS WITH
MOST ANY 7AC, 8EP TUBE BASE

Octal Bias Probe EL34 6L6 KT88 KT90 6V6 6550 more

6K6 6V6 6L6 EL34 KT66	KT88 KT90 5881 6550 + MORE

NOVAL ADAPTOR PROBE
WORKS WITH
MOST ANY 9CV TUBE BASE

6BQ5 7189 6P14 6P15	EL84 7320 10BQ5 10P18 + MORE

WATT PROBE
POWER
INTO 2,4,8,16 OHMS

Compu-Bias reserves the right to change or cancel any information listed including availability, specifications, and technical information appearing on this site at any time without notice.

Fully Automatic Tube Amp Bias Meter
NO GUESSING, NO CALCULATORS
PURPOSE BUILT FOR TESTING BIAS AND BALANCE

Indispensable tool for
Vintage Stereo Amps
Guitar Amps
PA Amps
Musical Instrument Amps
Jukebox Amps
Easily Set Bias On Almost
Any Vacuum Tube / Valve Audio Amplifier

Click Here

Easily check the Bias and Balance
on most any vacuum tube amp

Setting the Bias on a
SA-100 Fisher
With 7189 Tubes

Setting the Bias on a
JMP MK2
With EL34 Tubes "Valves"
Note improper bias setting
from previous tube set

Fender® Marshall® Peavy® Laney® Fisher® Dynaco® DIY
Guitar, JukeBox, Monoblock, Stereo Amps and more
See tube compatability for each probe.

ACCURATELY CHECK AND ADJUST
PROPER OUTPUT TUBE BIAS AND BALANCE
IF YOU HAVE A TUBE TYPE AMP THIS TOOL IS INDISPENSABLE

MAKES SIMPLE BIAS PROBES OBSOLETE

OCTAL ADAPTOR PROBE
WORKS WITH
MOST ANY 7AC, 8EP TUBE BASE

6K6
6V6
6L6
EL34
KT66

KT88
KT90
5881
6550
+ MORE

NOVAL ADAPTOR PROBE
WORKS WITH
MOST ANY 9CV TUBE BASE

6BQ5
7189
6P14
6P15

EL84
7320
10BQ5
10P18
+ MORE

WATT PROBE
POWER
INTO 2,4,8,16 OHMS

Fully Automatic Tube Amp Bias MeterNO GUESSING, NO CALCULATORSPURPOSE BUILT FOR TESTING BIAS AND BALANCE

Indispensable tool forVintage Stereo AmpsGuitar AmpsPA AmpsMusical Instrument AmpsJukebox AmpsEasily Set Bias On Almost Any Vacuum Tube / Valve Audio Amplifier

Click Here

Easily check the Bias and Balance on most any vacuum tube amp

Setting the Bias on a SA-100 FisherWith 7189 Tubes

Setting the Bias on a JMP MK2With EL34 Tubes "Valves"Note improper bias setting from previous tube set

Fender® Marshall® Peavy® Laney® Fisher® Dynaco® DIY Guitar, JukeBox, Monoblock, Stereo Amps and moreSee tube compatability for each probe.

ACCURATELY CHECK AND ADJUST PROPER OUTPUT TUBE BIAS AND BALANCEIF YOU HAVE A TUBE TYPE AMP THIS TOOL IS INDISPENSABLE

MAKES SIMPLE BIAS PROBES OBSOLETE

OCTAL ADAPTOR PROBE WORKS WITHMOST ANY 7AC, 8EP TUBE BASE

6K66V66L6EL34KT66

KT88KT9058816550+ MORE

NOVAL ADAPTOR PROBEWORKS WITHMOST ANY 9CV TUBE BASE

6BQ571896P146P15

EL84732010BQ510P18+ MORE

WATT PROBE POWERINTO 2,4,8,16 OHMS

Fully Automatic Tube Amp Bias Meter
NO GUESSING, NO CALCULATORS
PURPOSE BUILT FOR TESTING BIAS AND BALANCE

Indispensable tool for
Vintage Stereo Amps
Guitar Amps
PA Amps
Musical Instrument Amps
Jukebox Amps
Easily Set Bias On Almost
Any Vacuum Tube / Valve Audio Amplifier

Easily check the Bias and Balance
on most any vacuum tube amp

Setting the Bias on a
SA-100 Fisher
With 7189 Tubes

Setting the Bias on a
JMP MK2
With EL34 Tubes "Valves"
Note improper bias setting
from previous tube set

Fender® Marshall® Peavy® Laney® Fisher® Dynaco® DIY
Guitar, JukeBox, Monoblock, Stereo Amps and more
See tube compatability for each probe.

ACCURATELY CHECK AND ADJUST
PROPER OUTPUT TUBE BIAS AND BALANCE
IF YOU HAVE A TUBE TYPE AMP THIS TOOL IS INDISPENSABLE

OCTAL ADAPTOR PROBE
WORKS WITH
MOST ANY 7AC, 8EP TUBE BASE

6K6
6V6
6L6
EL34
KT66

KT88
KT90
5881
6550
+ MORE

NOVAL ADAPTOR PROBE
WORKS WITH
MOST ANY 9CV TUBE BASE

6BQ5
7189
6P14
6P15

EL84
7320
10BQ5
10P18
+ MORE

WATT PROBE
POWER
INTO 2,4,8,16 OHMS