Match to my power amp?

Dynakitbuilder · 852

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Offline Dynakitbuilder

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on: December 29, 2020, 11:05:35 AM
I just sent in my order for the new Bee-Pre and am really chomping at the bit.

I own an updated version of the Dynakit ST 70 ( 35watt/channel in pentode, 20 watts/channel in triode) and would like to match it up to the Bee-Pre 2.  A good match?
Thanks,  Tom



Offline Paul Birkeland

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Reply #1 on: December 29, 2020, 11:36:48 AM
The newest ST-70 (series 3) has a very low input impedance for a tube amp (25K), but will work just fine with the BeePre.  I suspect you will hear more of an improvement if you install the second upgrade than you might otherwise with a vintage ST-70.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Jamier

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Reply #2 on: December 30, 2020, 08:38:11 AM
PB, with respect to this subject, do you know the input impedance of the VAC PA 100/100. I’m hoping to justify the purchase of a BeePre-2. Something tells me this could be a good pairing.

Jamie

James Robbins


Offline Paul Birkeland

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Reply #3 on: December 30, 2020, 08:52:19 AM
The manual doesn't say, you'd have to ask VAC.

Paul "PB" Birkeland

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Offline Jamier

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Reply #4 on: December 30, 2020, 01:22:58 PM
I found the phone number (the one in the manual was not current) and called VAC. 100K is the answer. I got this amp several years ago, and while it is very good, it lacks that single ended magic.The question is will the new Bee-Pre add that missing magic?

Jamie

James Robbins


Offline Paul Birkeland

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Reply #5 on: December 30, 2020, 02:41:27 PM
A big part of the reason for the circuit changes was the unexpected popularity of pairing the BeePre with solid state power amps, so I suspect you may be onto something.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man