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Old March 4th 19, 07:49 PM posted to
Trevor Wilson[_3_]
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Posts: 127
Default More than 30W per chanel Class A transistor amps

On 5/03/2019 3:32 am, Howard Stone wrote:
> On Monday, 4 March 2019 16:06:40 UTC, Peter Wieck wrote:
>> On Monday, March 4, 2019 at 9:59:57 AM UTC-5, Howard Stone wrote:
>>> Aha, this is an argument for active pre-amps. Passive pre-amps presumably all have no gain.

>> Correct. Passive pre-amps are no more than switches.
>> Peter Wieck
>> Melrose Park.

> So I guess that, given that my project is about exploring Class A with my speakers, that IF I buy a pre-amp, it too needs to be Class A.

**Almost all preamps operate in Class A.

> And I suppose I find out whether there are any Class A DACs, because I think their analogue end must involve some gain.

**That will depend on how any OP amps used happen to be configured. I
wouldn't lose sleep over it.

Trevor Wilson

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