diyAudio Store

I love it! It’s a great complement to my ACA’s and now I have volume control. This is a super cool little unit.

While it took a bit longer than anticipated for the kit to arrive, and then the added time for the chassis to be sorted out, it was worth the wait. The quality of all parts is excellent. The instructions were easy to follow. The whole kit was quite easy to assemble. I was able to partition the instructions so that I could complete most of the board construction and the switch soldering while I waited for the chassis to come.
Using with my ACA, seems to be working well and the sound from the combo is excellent.

The only additional work that I may do is to experiment with more power supply regulation and/or filtering and (this is a personal preference) I may drill out the power-on LED hole in the front panel to allow more light. I have a hard time telling if the pre-amp is on when I glance at it.

Highly recommended.

This kit is easy to build. The only issue I had was needing to ground the volume pot. I used rubber mounts for the board, and sound deadening in the chassis. Microphonics are not an issue. It sounds very good.

I’ve tossed the switching ps wall wart
Built a 317 ps with plenty of caps and a few chokes
Fantastical
I use it to drive. My SIT 3 first Watt.

Mac mini
Qobuz
Audio nirvana
Up Tone USB scrubber
Denafrips Aries
Preamp DIY with new PS and Audio Note Caps
Sit 3
Zu Audio Soul Supreme
Wires etc from Joe Cohen’s Prana Wire (Nice stuff)
AC mains underground with 6 treated ground rods to increase ground conductivity.

So how does it play with others...
In a nut shell
GREAT
Build one
It’s a very happy and pleasant listening experience.

I love it
Ez to build
Great sound
Cheap
Looks good

Pair it up with the Camp Amp and a pair of Zu Audio Dirty Weekends

Will rock your world, no s..t

Phillip Townsend
Santa Fe
K5SSR
Never Solder Naked

Excellent packaging. All parts well labeled in their separate baggies. Sufficient wire even if you have a couple of booboos. Chassis is beautifully machined.
10 out of 10 in my book.
Thanks DIY Audio.

What can I say. Always nice parts and fast delivery.

The B1 preamp kit is very high quality and was an easy build. I’m very impressed with how transparent this preamp is. It’s a great value and the sound far exceeds what one would expect at this price.

Another well constructed kit from the store like ACA. 6L6 instructions are great again and kit contents are meticulously packaged. Customer service is excellent too, helping out with some additional cat 5 that I overstripped.

I only wish this unit could be patched into an existing preamp set up with an on off bypass switch to activate nutube/harmonics and a "volume knob" to dial in bias or amount of distortion. Overall, am a very happy customer. Highly recommended :-). Thank you 6L6!

This amplifier with tube preamp 12AX7 or 12AU7 is simply amazing !! I have no words for explain how good can sound, clean and accurate sounds. It's a very high level amplifier, recommended for beguinners. The problem is.... what's the next step ??

It was worth to wait, the ACA sounds amazing with my monitor audio Bronze 2
Comparing it to my LM3875 based previous Amp you get much more details and much better staging

Wayne' Linestage , very nice board, sounds great

Awesome!!! Very high-quality, sounds terrific!!

It is fun to assemble a well prepared kit like this with all the necessary parts. The proof lies in the listening of course, very well done! I will use it with Pass F6 amplifier.
Thank you

10/10; Just about perfect. Will shop here again.

what say.....Perfect!!