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LATEST STATUS UPDATE 2020-03-31: Our hearts go out to all those affected by the pandemic worldwide. The situation is changing daily but so far we have been lucky enough that there has been no disruption to our US origin shipments, and only minor disruption to our shipments from Italy. SHIPPING F...
All lines of matched Linear Systems JFETs are now back in stock.
We have a couple of pioneer's batch B1 Korg full kits left. Feedback has been very positive. If you don't want to wait a few more months for the pre-order to happen, this is your chance to grab one now.
This is my 3rd amp from Elekit. They are good kits to build. Supplier responder very well.
Hello I have bought them to build the "Boozhound Laboratories Deluxe JFET Phono Preamp". I have just soldered them, check the DC biasing and it was everything perfect according to spec. NO troubles. Sound is great and clean. Noise is very low.
It was a good service.
Thanks.
Diy Audio store is a great resource to the diy audio community. Having access to these hard to find JFEts has helped turn a new hobby into a full-blown addiction! Can't wait until the next shipment of hard to find, quality audiophile grade parts arrive. Come on F6 parts kit w/MOSFETS......
The chassis was very well built, particularly for the price and worked well for my purpose. I ordered the 10mm front panel and it gives the amp a very finished look.
All the parts needed to make the crossover work in a neat package. THE CROSSOVER ITSELF IS GREAT !!!!!
I've had the base TU8600 with Mundorf silver oil caps added for 2 years now. Everything pretty much settled. Was looking to buy those transformers only but never saw available until now (thanks Jason)
Anyway, the improvement was immediate no break in needed. As I've read before just more of what the 8600 is good at clarity, soundstage, tonal balance and accuracy.
Worth the dough!
I have not built the project yet. The board looks good.
Great service! Parts arrived very quickly with everything accounted for. About to start my F4 build! Thanks DIYAudio Store!
Rob G
I liked this pre-amp so much, I bought and built a second one for my main stereo.
The parts are high quality, and packaged really well. The kit shipped promptly.
Really, I have nothing but praise for this project. It's awesome!
Hello, I was looking for a preamp to my ACA which I built last year and which I am fully satisfied with. I read a lot about it in the forum and was enthusiastic about the idea to build both a headphone amplifier and a preamplifier for my desk setup. The size of the Whammy and beginner friendliness matched my experience. The guide is structured in a way that it can be reproduced without errors. But if a mistake has crept in, then you get a great support from Jim.
To sum it up - I was more than positively surprised. The sound is terrific. The forum posts about different op amps made me curious and I ordered and tried out additional opamps. Since I am a complete beginner, I simply ordered a handful from Mouser and tried them out. In combination with my desk speakers (https://quint-store.com/lautsprecher-bausaetze/kompaktlautsprecher/ct227-xt) Muses02 has proven to be the best choice. The combination of Whammy and this opamp gets so much more out of the speakers that after two weeks of use I'm still completely off my feet. I can only recommend the Whammy!
Cheers
Dirk
Very well matched N-/P- channel JFETs from LINEAR SYSTEMS. Fast delivery and well packed.
What a wonderful sounding preamp. Build took me about 4 hours as someone with moderate experience with electronics and a soldering iron. This is now sitting in front of Aleph-J and I'm in love with the sound. Microphonics were a problem but not hard to tame following others recommendations. Now just to finish my new DIY speakers......
I couldn't get over how EVERYTHING was in this kit. All quality parts. These guys know what they are doing trust me, cause I surely don't. I've never built anything electronic in my life. I'm the definition of beginner and I finished this amp in 3 days! It sounds amazing. Worth more than the price. I highly recommend this kit.
My ACA has NO hum or noise with my ears to the speaker drivers and the B+ voltage is rock stable at all times. I figured the power supply itself dissipates 6 watts of heat and is hardly warm to the touch. Great value! (And no need for a linear supply!
This kit is an excellent value and easy to put together. My only wish is that there were an updated parts according to the Pass-approved changes on the DIY website. The increased cost would be minimal. I would appreciate, having bought the new parts from Mouser for the original build, having the the new parts included in the kits, even if it cost a little more, rather than sending the order off to Mouser and having the original parts left over. Minor issue: the DPDT switch is very heat sensitive with soldering. I replaced mine with ARCO brand and had no problems with the pins drifting in the plastic housing with the minimal heat from my soldering pen. Overall, however, I thank the team for this kit and the quality of sound for the money is fantastic!
Excellent chassis. The instructions could have been in better order. When I built my second amp and chassis, it went smoother and faster. I put the entire chassis together and took it only apart enough to install the amp. It fit together that way and was more square and required less fiddling with loosening and re-tightening all the struts and other parts to get the top and bottom to go on squarely. Nevertheless, the finished product is handsome, functional, and keeps the whole amp as cool as possible. I don't know how this cabinet was provided, including shipping from Italy, at this price point. I've built other Pass amps, but this one looks like it came from his factory!
This went together without any issues. Fantastic sounding unit without any of the ringing people are talking about. highly recommended. I really like the enclosure and the clean look. Same width as the amp camp amp. Could not be happier with the product.
This is truly an excellent amp.
Very musical and dynamic.
This time around I will be trying some new interesting mods
I have been searching quite a long time for this little boys and i am very happy with them.
Nice shop and a thrustworthy supplier.
Recommended!!!
This is my third order of this parts kit. Theses parts are all of excellent quality. This kit saves a lot of tedious time from counting and ordering all the little hardware pieces needed for a build. If you purchase a chassis from the store, this is a must buy also.
Is the best service diystore can provide.
We received genuine product and successfully
complete project.
Without properly matched mosfets, my power amp
cannot be done properly.
Thank you very much.
Good overall
Kit arrived very well packaged . With help from the build thread it was a straight forward build. I placed a piece of carpet underlay felt under the Nutube and the silicone ear pieces from earbuds on each mounting post. It is hooked to a M2x and sounds very nice.
If anyone should have been trepidatious about building this it was me. Large hands, old eyes, and horrible at soldering (I destroyed the Lundahl kit for a step up transformer for moving coil cartridges). But I read the reviews, looked at the guides, watched the YouTube soldering video and took the plunge.
I had the kit for over a month before starting, and while I had it I did diligent research at the DIY Audio forum. The thread "ACA Amp with Premium Parts" gave me an inkling of a jumpstart that made sense for me and my 99db efficient 1972 Klipsch Cornwall speakers. I wanted a stereo amp only as I didn't need more than 8 watts and I wanted to max it out within reason. The stereo mods described by the user named "TungstenAudio" led me to upgrading a handful of parts and settings from the stock kit cheaply (less than $30 from Mouser). A few days ago I laid out all the parts and equipment before going to bed, ready to start in the morning with a full day available. It took me much longer to finish than the estimated 3-6 hours, but I found my speed increasing as I stuffed the 2nd circuit board. End of day one the boards were done and installed on the heatsinks and the imported chassis was fully assembled. I had a busy schedule the next day but went back after it yesterday. Took me about 6 more hours (I was making repairs on the fly near the end) but before the second football game was at halftime the amp was complete. It powered on without a hitch on first attempt and after testing it on a pair of small desktop speakers I hooked it up to the main rig.
My previous amps were 50 WPC tube amps running octal tubes and I thought with the right tubes they were sweet but something was missing. And what was missing was a fuller, richer, tighter bass sound. And guess what? The little ACA gave me that IN SPADES without losing any significant impact in the mids and tweeters. Still sweet, same soundstage, etc.. I am very pleased.
This 300B kit resulted in sound quality that retired amps from my listening room that cost several fold more. The build instructions are so clear that experienced builders and newcomers should enjoy the soldering.... and the end product offers performance that can’t be over-sold
This is my third set of UPS boards. These are of great quality like all other diyaudiostore boards. This is a much more convenient way of building a power supply then point to point. It keeps everything nice and clean. I love that you can cut the rectifier section off and use two standalone bridge rectifiers. These take up less space and don’t require heat sinks. This board can be used for any +- DC power needs with a correctly size transformer.
The BA-3 boards are excellent quality. diyaudiostore does a great job with all their boards. As for the BA-3 itself, do not hesitate to build this amp. Do it now, you will not regret it. There is something really really special about this one.
