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AUDIO FORUMS >> General Discussion and Support >> 274B Rectifier and Rachael
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Message started by Alan Arkin on 10/05/24 at 12:02:58

Title: 274B Rectifier and Rachael
Post by Alan Arkin on 10/05/24 at 12:02:58

Hi there... I am relatively new to tube rolling with my Rachael. I've rolled the input and output tubes without incident and recently bought a Sophia 274B Aqua II rectifier. I noticed that the pin configuration is different than the Decware branded rectifier that I have. Do I need an adapter to use the 274B? Just wanted to check. Thanks!

-- Alan

Title: Re: 274B Rectifier and Rachael
Post by Lon on 10/05/24 at 13:43:30

You do not need an adaptor to use the Aqua II. Just let the guide pin position it and pop it in--will work perfectly with no danger to the amp or tube.

Title: Re: 274B Rectifier and Rachael
Post by Alan Arkin on 10/05/24 at 13:59:24

Thanks Lon. And yes - it went right in. I think I was thrown off because the guide didn't align with the lettering on the tube.

Title: Re: 274B Rectifier and Rachael
Post by Lon on 10/05/24 at 14:21:03

I think it's a fantastic rectifier. Let us know your impressions.

Title: Re: 274B Rectifier and Rachael
Post by Alan Arkin on 10/06/24 at 16:02:35

So far I am really liking it -- still burning in, but more open and more detailed for sure.

Title: Re: 274B Rectifier and Rachael
Post by andardhusband on 11/12/24 at 11:48:06

You will likely need a socket adapter to use the Sophia 274B in place of the standard rectifier. These adapters are relatively easy to find online, especially from places that specialize in high-end audio tubes or components. They’re typically designed to allow you to use a tube with a different base type in a socket that doesn't natively fit it.

Make sure to get one that’s compatible with the 5AR4/GZ34 socket for your Rachael and the 5-pin configuration of the 274B. Once you have that, the tube should work fine, and you can start enjoying the benefits of the Sophia 274B!