Volume Adjustment

Also, imo EVERY audiophile should have test tones from a reputable source and an SPL meter…. And learn the basics of both..,

Thanks for the answers !  The volume control knob is smooth as silk and no crackling or popping. ( I have that issue on a MA-6500 I bought about 7 years ago and for which I just bought a can of Deoxit D5 but have not applied yet. Opening up the case was cake. Just a little hesitant on using the spray.)

And, yes, the Trim Controls work great and there are .5 db increases/decreases to Input Trim and 1.0 db increase/decrease for treble and bass which seem to be on target. 

SO . . duh . . the iPhone in my hand has a built spl app.  I will test 52 vs 53 volume setting and report back.  Problem will be I don’t have a sound source that is steady and a regular CD will have built in volume fluctuations.  Maybe I can find a volume test signal tone on Spotify. We shall see.  Over. 

Thanks for the answers !  The volume control knob is smooth as silk and no crackling or popping. ( I have that issue on a MA-6500 I bought about 7 years ago and for which I just bought a can of Deoxit D5 but have not applied yet. Opening up the case was cake. Just a little hesitant on using the spray.)

And, yes, the Trim Controls work great and there are .5 db increases/decreases to Input Trim and 1.0 db increase/decrease for treble and bass which seem to be on target. 

SO . . duh . . the iPhone in my hand has a built spl app.  I will test 52 vs 53 volume setting and report back.  Problem will be I don’t have a sound source that is steady and a regular CD will have built in volume fluctuations.  Maybe I can find a volume test signal tone on Spotify. We shall see.  Over. 

Okay . . . found CD Test track on Spotify (something like decibel.org from Amazon for free).

Used a 1,000 hertz test tone and it appeared that each Volume increase from 52 to 53 to 54 increased the volume by 3 dbs. 

So am guessing the MA-252, not being a high priced amplifier with a large volume knob like those on a Pass Labs amp, had compromised volume adjustment to about 3 db per volume control display. 

 Makes me recall what my Dad would say, “Poor people got poor ways.”

Uncle.  Over and out ! 

Ask Mac I seriously doubt the 3db step in right….