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Re: Direct Volume CDP into OTL amp?

There is nothing inherently different about an Atma-Sphere OTL amp, or any OTL for that matter, which would preclude using a simple passive control.

This said, you're never going to get that passive to properly control the interconnect cable. If the cable is *very* short (a foot or two) this isn't terrible, but start adding length and the lack of control quickly becomes an issue. Using a balanced passive control is a better idea, but ends up being the proverbial 'whistle on a plow' when you realize that it's still quite incapable of driving a low-impedance line - and it's at low impedances (600ohm) that balanced systems really shine.

In an era of hot (line-level) signal sources from CD players, tuners, etc most components don't actually *need* much (if any) preamplification to drive a given amp to full output. What a correctly designed line preamp really gives you is the ability to properly control real-world lengths of interconnect.

Glad you are enjoying the S-30; we enjoyed making it! ;-)

Bill


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