Coil Audio Preamps


Squawk

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I just ordered one of these preamps. I'm pretty excited to shoot it out against the Groove Tubes Vipre.

I'm already saving for a 286, which I'm hoping to shoot out against the Sonic Farm Berliner.

ca_70s_hero_b.jpg


CA70s_A.jpg
 
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Monkey Man

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Congrats Mr. T!

Hey, thanks for bringing the forum back to life, mate. Yours is the first post here in quite some time.
 

Squawk

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I try my best Monkey Man! :laughing: Had a busy past couple of months. New place, new studio setup, etc.
 

Squawk

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Having had this for a couple of weeks now, I can say that I really like the CA-70s. It's very easy to dial in a great sound with the controls. In comparison to the Groove Tubes Vipre that I have here to compare with, I do find the Vipre just a bit bigger and more up front sounding.

Since the Vipre is no longer made, the Coil audio is a great alternative if you are looking for that type of old school big sound from a tube preamp.
 

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That's the negative feedback control. Basically they put it on a pot, instead of either having it fixed, or on a switch. If it's turned all the way counter clockwise, NF is off, and you'll get a brighter, more open sound with more harmonics and a bit more gain. Turned clockwise, negative feedback is fed into the circuit, and it's a darker sound, less top end excitement and harmonics. Very useful to quickly dial in a good setting to match your microphone.
 

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What I found is that by adjusting the impedance settings on the Vipre, I was able to somewhat mimic the affect of negative feedback in or out of the circuit on the Coil CA-70s.

I still have a soft spot for the Groove Tubes Vipre. It was the first really good preamp that I purchased when starting out (after the Avalon 737), and it was a lot of cash at the time! That was maybe 18 years ago (damn!) and I still have it.
 

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That's the negative feedback control. Basically they put it on a pot, instead of either having it fixed, or on a switch. If it's turned all the way counter clockwise, NF is off, and you'll get a brighter, more open sound with more harmonics and a bit more gain. Turned clockwise, negative feedback is fed into the circuit, and it's a darker sound, less top end excitement and harmonics. Very useful to quickly dial in a good setting to match your microphone.
Brilliant!

Thank you, T. :beer:
 
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