This month on Preservation Sound Radio: nine side-filling tracks from 1970 thru 1986, all from…
This month's show airs Tuesday 2.20.24 at 8:30PM -11:25PM EST on WPKN 89.5 FM in…
The first Preservation Sound Radio program of 2024 will air Tuesday January 16 at 8:30PM…
As aired 8:30PM-11:30PM 12.19.23 on WPKN 89.5 FM Bridgeport. Enjoy. PSR DEC2023 sequence 1. Click…
Tonight 11.21.23 8:30 PM EST: special advance broadcast of the P/S Winter 2024 Mixtape. Catch…
Here's the tracklist for the 2023 Preservation Sound Summer Mixtape, to be broadcast 8:30PM EST…
View Comments
Almost all preamps for hi-fi are transformerless, and this is probably really intended more as a hi-fi or a broadcast piece than a piece of lab gear. Extended HF response can be a real problem in audio gear, when they start picking up and passing RF, and worse, sometimes oscillating via the "antennas". But there were lab uses for this kind of stuff.
McIntosh amps all went as high as 50 kHz out and some as high as 100 kHz. A lot of them were used to relay baseband telemetry and more recently to test notebook display backlights (see the late Jim WIlliams' books).
I need schematic scott 272tl please thank yuo.