2. amps-preamps
  3. 158207-5435

How does the input impedance of an amplifier effect it sonically?

I understand the effects of an output to input impedance miss-match, but what I don’t understand is
why there’s such wide range in (especially input) impedances. Most tube amplifiers have a very input impedance. Solid state on the other hand has impedances that range from 5-250k. Why so much variance and how does it effect the sound of an amplifier, if it does at all?
hiendmmoe

Showing 2 responses by oldhvymec

oldhvymec
5,101 posts
 
One thing for sure will effect SQ is low LOW, like the old VTLs. .75 or something. Most are 1.2? My Modded MACs, would OVER drive them to over 320 watt per 300 watt rated MB.

When you played at low volumes they didn't sound right. If I remember it was a Pro preferred setting.  I had to do a couple of things to make them work, fixed output, sucked too.  I fixed that too. had a 3.2 and a 5.9 tap..

Just the way they did it.. not a very good idea, in hindsight, kind cheap...kinda lazy... You had to match those for sure. You should hear them push good/big horns though...My lord.. 115-120 the ol spl meter..

Regards
oldhvymec
5,101 posts
 
Ya know when I read your question again. It has to do with Pro vs Home stereo gear, too. The difference between the two.. You could  plug something into a lot of the old amps for amplification, Macs, VTL, for use in a band (LIVE), PA, all kinds of apps, ay? Some could get by doing both, but not both well, Mac is the exception..Sure there were a few more.

There are a lot of music guys that are stereo guys too.. They probably know....

Regards
More to discover