Please note: Our Italian chassis partners Hifi2000 are closed for summer holidays between the 8th to the 23rd of August 2020. Chassis shipping will resume during the last week of of August, most likely towards the end of that week. We do apologize for any inconvenience this causes.
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Service delays updates We have updated our shipping rating system to now advise customers of the following expected delays to each service. This should cover 95% of shipments, however 5% are delayed well beyond these extra number of days. DHL Paket - Expect 7-21 days delay DHL Parcel - Expect ...
Aleph J PCBs are now back in stock.
We have just received shipment of all B1K PCB and JFET kits required to sate our B1K full kit pre-orders, as well as having a few more left over now for regular sale.
We now have plentiful supplies of matched Linear Systems JFETs. The ordering limits have been relaxed from 2 units (per product, per person, per month) to 4 units. If you have a need for a greater quantity than this please get in touch.
A lot of people have been asking for us to release the RK27 breakout PCB, and it is now available for just $5.
Nice little pcb that makes soldering to the ALPS-pot easy! Very recommended!
Great companion supply for the latest generation of the ACA. Highly recommended,
Easy to flow and professional looking results without fail. It's my first time using this type of solder, and you will be very pleased, even if you are a novice tech.
diyaudiostore is totally among the best!
diyaudiostore is totally among the best!
diyaudiostore is totally among the best!
very useful set of parts: solves both availability and matching for you in one go.
I'm EU based, so only ordered the parts kit from DIY Audio, the chassis is from the EU in any case. I've been building Eurorack modules for several years now, which means I have familiarity with getting a bag of parts, a circuit board, and some kind of a build guide-- that's part of what I'll be comparing to.
PCBs and components. All top quality. Very nice sturdy boards, Bournes trimmer pots, .... the baseline standard is "very good to excellent". You'll have to work hard find better components.
Board spacing is quite generous. My biggest learning issue was bending the resistors 1/4 inch out from their ends; my habit from Eurorack is to bend right where the wire leaves the ceramic. Soldering was simple and fast. I did have to raise the temperature for one or two joins where the contract traces were larger; this is expected as the larger traces pipe away the heat faster. I mentioned that I have experience, I want to add that yes, I still use the printed circuit diagram and check off each part as I add it to the board. I find this really satisfying, like crossing items off your to=do list, and a key to any successful build is parts management.
Eurorack usually doesn't require a wiring harness (it is usually etched into the top PCB, and you solder the jacks/pots/switches/LEDS directly into the PCB), so making the harness was more mental energy than expected. However, the amount of supplied wire is very generous and forgiving, and the instructions clear and straightforward. I enjoyed learning how the author(s) structured and present the information.
The instruction manual is very good. It is clearly designed for a motivated novice, i.e. small steps with lots of detail. It is also evident that the authors have walked many people through this, and iterated the build guide as they did so.
I work slowly, because this is a hobby not a job, and spend way too much time on each design decision. I'm about 5 hours in and just finishing the wire harness. I think I could build it in half the time next time.
Nice quality. It was a little difficult for me to tighten the inside philips screws on the heat sink rails. On future models, if hex screws are used, an Allen key can more easily reach the screws to tighten them.
Some error happend, but for me, no problem.
Pcb items received and all ok.
This was my first experience at building anything requiring soldering. The package was complete and the instructions well laid out. I have to say that this little amp is changing how I listen to music in my office as I change over and sell some equipment with the ACA at the center of everything. This won't be my last experience with Nelson's designs. Very well done.
I so love the first stereo ACA I built from late last year's release but wished it had a tad more power. Even with my very sensitive (96db) full-range Audax speakers. So patiently awaited the next release and voila got my chance for a second to create mono blocks! So I'll have to rewire the original (super easy - thank you Mr. Pass) and then I can "turn it to 11."
For those curious - amp has the warmth of an EL84 tube amp (my closest comparison), the crispness of a solid state, and the non-clipping high end of a D-class. They do need sensitive speakers, but those can be had for a very reasonable sum (BIC makes some good really affordable sensitive bookshelves and if you're a DIY-er, consider kits and parts from Partsexpress and Madisound). Of course if price is no object, there are loads of options.
Historically I've had KT88, EL34, EL84, class D 2020 & 21 tripaths, and MOSFET/SS amps - many varieties of all these types and I really love my ACAs.
So now to build my second, rewire my first, and build that Korg pre-amp. It's gonna be fab and well worth the wait!!
Quick delivery of these nonobtonium paired parts we audio-DIYer cherish so much - thanks!
I'm not done tuning it yet, but it is built and has been tested on big speakers, and it pushes them very well and sounds better than what I currently use in the living room. This was my first amp that I have built, and the support thread was very supportive. Very pleased with the overall experience and the sound is great! Nice amp, thanks!
I was floored upon hearing the amp just after biasing both channels. Never thought I can get this kind of sound from a diy kit. It was Sonic purity at its simplest!
It was easy to assemble and is exactly what I was expecting.
I used them to build two 360W RMS monoblocks amp. It came out very nice. Below is the picture of one of them.
The circuit boards are of excellent quality, and affordable!!! I bought them to use as my finished amp configuration after much experimenting with the originals in making circuit changes to tune the amp to my system.
Great kit! Assembled it in a few hours, without problems. Worked on first attempt and plays beautifully.
I never managed to get rid of some noise issues with my minidsp solution. Finally I have a silent background. Also the speakers still sound great! Maybe slightly "different", but not sure how to describe it. Could be the lack of noise :) Anyhow, this kit will stay in the system, without any doubt.
Thanks for the great job to everyone involved!
I have bought several chassis from these guys. What amazed me right out of the gate is everything was properly deburred. Everything was square, flat and without blemishes. Now when you go to drill your own holes in it you will discover that the aluminum is some recycled gummy crap. But if you are careful and use sharp tools you can produce nice looking cuts. If this was American made it would cost 3-5x what this does. Its actually a very good deal for the price. Leaps and bounds ahead of 20 years ago. If the plates are too thin go to home depot and buy some 1 x 1 x .09" aluminum angle and rivet or screw a few pieces on the inside of the panels it will fix you right up. These things have all the holes in the right spots, good workmanship, a decent anodized finish and its cheap. other than the crap they make it out of its a top notch product. And the crappy aluminum is plenty strong enough to sit there and be a box. Just be careful drilling it. Its like drilling bubble gum and if you attempt to deburr it with a rout-a-burr be damn careful as it will grab and take a much bigger cut then you want. Use a dull as hell deburring bit or better yet a file or sand paper.
Very excellent quality case, cannot fault the fit and finish one bit. This is exactly what I needed for my DAC/Amplifier project. Surprisingly fast shipping, took only 1 week from Italy! Highly recommended.
I liked the first one so much when I put it in my main system that I built a second one for my desktop system. This circuit deserves a high quality linear regulated power supply, especially if using the large outputs to drive headphones. I used the power supply as an excuse to learn KiCad and did a 2-layer PCB layout for the power supply section of Wayne's Whammy HPA. It does a great job. Another good power supply is Mark Johnson's VRDN, which has its own forum. Or search the BA2018 forum for other ideas.
This is a great a great enclosure/chassis. It is well designed and produced. I built Papa's F6 amp with this enclosure. And this enclosure made my project easy and fun. It looks great too! Initially, I set a low budget for enclosure. But I am glad that I changed my mind and purchased this. It was a game changer for me.
This is a great enclosure. Initially, I set a low budget for an enclosure. But I really am happy that I changed my mind. It is well designed and it looks fantastic. Assembling this enclosure was really easy. This enclosure cased Papa's F6 amp which is another great product. And it made my project much easier and therefore fun. In fact, it was a game changer for me. Well worth the price.
Excellent boards. Installed all components, biased up and working 100% and dead quiet
Even for an oldish geezer such as myself, Wayne Colburn's BA2018 linestage was a breeze to assemble. It performs like a champ: a broad and deep soundstage, excellent detail and a delight to listen to. Many thanks to Wayne and the diyAudio store for making this available!
All good with product, service and shipping. Very happy.
I built this as a companion to the ACA. Love the sound of the ACA, but it needed a little boost at the front end, so enter the Korg B1. It's not a completely true pass through of the signal, but, set at the recommended level, the harmonics introduced are pleasant to the ear. For the price, I'd highly recommend this as much for it being fun to build, as it is enjoyable to listen to.
Very good sound and awesome look. I´m using ACP+ with my orthos and Noir with Sennheiser hd600.
This sounds very good with my MoFo too. It sounds very good and it´s versatile headphone/linestage.
Llegaron a casa con bastante rapidez (España) los jfet y las PCB para montar un aleph J.
Como siempre, muy contento con la calidad del material además de la cantidad de información y facilidades para el montaje que facilitan muy amablemente desde diyaudio.
Aún estoy en el proceso de montaje en un chasis 4U, pero aquí dejo alguna foto (iré publicando mas a medida que vaya avanzando).
Finished my F-6 a few weeks ago. Truly amazing amp and not that challenging for a semi-beginner. Plenty of things I had to decipher but helps me learn. Nothing blew up and still no smoke or electrical fires after several weeks, probably a good sign. Fantastic level of detail with my Klipsch Fortes and more than enough power. Trying it now with totally rebuilt DQ-10's--much harder speaker to drive but sounds luscious and sensual in a way that the Fortes can't quite do. Gets loud enough for me with the DQ-10 but if I keep these speakers I'll probably tackle the F5T at some point. Now just waiting on my nutube kit we'll see what that does.
What a fantastic hobby this is but potentially highly addictive. Be warned.
Great chassis, easy to work with. Maybe a little expensive but worth it for ease of building. Somewhat still a beginner but complete the F6 without issue and the chassis works great for it.
As you can see everything fit. The power regulator board and two tube based phono preamps. It looks really nice and works well. The raw DC power supply is remote for noise reasons. I use the Galaxy steal chassis for most of my projects. I'm currently working on the main preamp which will also fit nicely into the same chassis.
Tightly matched quartet. My ACP+ sounds wonderful with these.
Fast & safe delivery even to Prague!