Bias adjustment

Check out the VHT Bias tool....   sold at music stores.  It has two sockets and dual mA meters.  

Thank you. If I may be so bold as to ask what is a VHT bias?  And why does it have sockets? Don't I need only two leads from the meter to the bias connector [jack] on the amplifier? I'll check it out anyway. Any and all info will be greatly appreciated.

@ richfrank

I assume you still have the Cary SLI-80

See page 12. It appears all you need is a plug and of course a multimeter.
https://caryaudio.com/wp-content/uploads/2014/06/SLI-80_manual.pdf

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I got this cheap Woods multimeter at Lowes a few years back for my Cary SLI-80...now use it on my SLI-80HS.  Very simple and about $20.

https://mobileimages.lowes.com/product/converted/032886/032886958441.jpg?size=xl  

Thanks. I have a simple VOM also, but the CARY techs claimed that my bias setting was wrong and it burned out the KT-88. I know what I read on the VOM and it was reading 80 mA as it should be, but CARY kept insisting I had to send the amp back to them. I wouldn't buy a CARY PRODUCT again if my life depended on it. The techs are rude, sarcastic and think they know better than the client. Screw them!  And that's a FACT and you can post it if you want.