All lines of matched Linear Systems JFETs are now back in stock.
Welcome to The diyAudio Store - we stock genuine, hard to find parts for DIYers that you can't find anywhere else
Most recent additions to the store
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.
Back in stock: Matched Linear Systems JFETs, F6 Transformer kits, Analog Crossover Network / LX Mini PCBs, Korg B1 PCBs
Back in stock today: A wide variety of Linear Systems matched JFETs (Grade B, other grades coming in the weeks ahead) F6 with Jensen Transformer kits Analog Crossover Network / LX Mini Crossover Korg B1 PCBs and JFETs (as well as a pre-production round of pioneer kits for the brave)
I ordered 2 quads of JFETs. One was for the Ishikawa input buffer on my M2X and the other is for the Aleph-J that is under construction. The Ishikawa worked perfectly first time and when I measured loads the difference was below what my equipment could detect. The harmonic distortion of the amp was very low with the Ishikawa. Best of all I really like the way the M2X sounds. These are great. Thanks!
Great people, and excellent communication. Products work and they gave me personal help.
Diyaudiostore is Reference-grade!
Very good parts. Nice to get the matched as well. Hope to be able to buy some more of the pairs, quads or octets. I was planning to build a few discrete JFET Opamps for my microphone preamp.
Perfect matched transistor with a long lead time (6 weeks)
Already in use in my F5 with very good results
Measurement will come very soon online
Not only do they look good, they actually work to move the case around.
The Deluxe case make the job of building amps much faster.
After building the ACA v1.6, the M2X, when diyaudiostore had a sale before the holidays I bought:
Aleph J PC boards
Quad matched JFETs
Between saving money and having so many people help with questions and the build guide, I now have another incredible sounding amplifier.
Great build quality and very fast shipping.
Chassis is very sturdy and solid once all sides are bolted together.
Building F5 Turbo ver 2 mono blocks and this chassis is ideal for this or any other solid state amp project.
Only wish that the back panel was available blank during purchasing as an option to allow for own customisation and that UMS heatsinks allowed for mounting of PSU diode PCB.
Great service from the DIY Audio Store team.
Great and easy to build kit. At ~9.6V and inverted speaker phase a great match with my diy F6. Quite mellow, but wonderful, in front of my diy M2 running Altec VOTs. Great in front of hypex nc400 driving conventional 2 way speakers. Havent tested different 2./3. distortion profiles or different caps yet. A bargain as it sounds great as is, on top of that you can fine tune and tailor the sound to you system and to your liking.
I have not had the time to start my project yet. But the circuit boards is the finest I have seen, top quality !
Everything was ok, fast shipping. Highly recommend.
Good quality boards, my second purchase. Exactly what I need.
Excellent quality boards.
After the great customer support from Elena and Jason, the kit arrived in The Netherlands. Perfectly packed, clear instructions and all parts complete. The instruction manual is of a very high quality ( respect! ) and building the amp was not very complex and a lot of fun to do. You need a bit of solder skills and the right material though. Unpacking the big Lundahl trafo's was a special moment, they are beauties. After finising the kit and putting in a complete Genalex tube set, i first listened with a cheap headphone to be sure everything worked fine. Sound was a bit muffled ( brand new tubes ) in the beginning but it was already very promising. I could not resist and connected it to my Klipsch Forte III and Lumin A1 to listen how it sounds and see if i had enough power. Well....more than enough! After connecting the TU-8600 i let it play for days to break in all parts, no critical listening, just background music. Last night i was listening with my girlfriend and we sat on the couch for hours, number after number, album after album and we could not stop. I'm 42 and had all kinds of equipment at home. Only transistor amps and my last on was a 2x30 Watt class A of 14K. None of these made me cry of musical emotion...this one did which was a revalation. Stage, immense detail, dense natural spooky real sound, articulation of voices, bass speed, power & detail...all there at any volume. Also when you play at low volume all is there which is very important for me, i don't want to play loud all the time to hear all details. The only thing i changed were the ECC82's which are Philips Miniwatt's now to give the sound a bit more 'body' but that's more personal taste. I'm very very happy with this amp, and it feels like an endpoint now. What you read in the reviews is true, it is that good. A big thanks to the designer of the amp and diyaudiostore. You made me a happy man.
This was the first time I built an electronics kit since I was maybe 10 or so. Went together very smoothly. The available documentation for this kit is great. I nearly bought a cheap "tube amp" of dubious origins on Amazon, but decided to build the starving student after reading lots of great things about it. I am glad I did. This amp adds real presence to both my headphones and to my newer Sony HiFi amp when used as a preamp.
this is a really good unit considering the price, i am replacing my Massdrop CTH with this. this is a really dynamic amp and a really neat kit
I chose the Starving Student II as my first DIY audio project. i enjoyed the build, the kit contents were well packaged and the instructions in the assembly guide as well as 6L6's build guide were great. I'm listening to it now and really like what I'm hearing. DIY Audio delivered what they said they would. Highly recommended.
Se title. If you could charge the Danish customs fees/rates when buying (like Punkydaves), I would save 25USDs on any purchase. There exists a special shipping option, that does this.
She’s so magazine with First-Watt F4 more than Ba-3 Preamp.
Although her voltage gain is small, she doesn't sound like it.
Elekit has put together a winner here. The components appear to be of high quality and are neatly packaged. The instructions are, for the most part, very clear. Everything fits together perfectly and my amp ran without a hiccup from the moment I flipped the power switch. I wouldn't recommend it to a complete amateur, but as long as you have basic mechanical ability and a bit of experience with soldering components to PC boards you'll have no trouble with this project.
I bought the PCB from DIYaudiostore and manually selected the parts from Digikey/Mouser etc.
PCB is of high quality and once assembled, the amp worked right away.
Sound quality is great, clearly above my JDS Atom, but I advise to play with input coupling caps and Op Amp to get the best synergy with your other gears.
I went for a slightly bigger chassis (Hifi 2000 Galaxy GX283 80x230x230), and it gives plenty of space to play around.
Be aware of the extra cost due to customs (shipped from US to EU, +33E in my case).
Very nicely done.
Turns out I needed printing to get looks to match the ACA that I wanted but the factory where very helpful and after a couple of e-mails they posted out exactly what I'd asked for with no delay at all.
This long shallow case was just the right size to fit in front of my turntable and house Pearl 2 PCB's. A couple of components will be a squeeze but worth the effort for a professional look. Custom face plate with "Pass Pearl 11 Phono Pre - Amp" printed on it to match ACA just adds to the pro look. Just need to order the rest of the parts now.
A really nice pcb. Follow the directions on diyaudio, and you'll have a great-sounding amp. Drives both my Grados and Sennheisers with ease. Looking forward to some op amp rolling. Thanks for making this available to diyers!
When properly used this is an hiend product. I call it 'native sound procesor'.
This chassis is well designed and well made, reasonably priced, and promptly delivered. What more could anyone want!
What a great preamp!
Easy to built and what a sound! I am really amazed about its soundscape: deep, large and full of details...
I recommande it absolutely ! Sincerely yours, Thierry Malarmey-Dorel
The MOFO is a fine amplifier: organic and rich soundscape, very natural medium range.
Of course, it depends totally on the quality of your preamplifier. Very easy to build, it is sincerely a great satisfaction.
I recommande it absolutely. Musically yours, Thierry Malarmey-Dorel
Thank you so much for your great work!
It's nice to have found a trustworthy supplier.
Pls. make sure that what you are selling also corresponds to the actual picture.
Very fast delivery time. High quality boards. Will defenitely recommend.
Bought to build ACA matching power supplies and bolted on top of the ACA. I cut a big hole in the ACA top and cut and trimmed the ACA to brackets to get the transformer in and sticking out the top. Very pleased that a quick dusting with satin black paint over the top of the lid covered bare Aluminium edges but the brushed finish still came through leaving a factory OEM look. I love how professional these case look.
Bought a pair to give me some different options for mounting transformers inside a pair of mini dissipante cases above the filter boards but did not use them in the end. But at just 8 bucks It was worth it just to have options. Happy to keep them around for re-purposing another day.
Look a bit too chunky on the bottom of the ACA but would look OK on the bigger cases on offer.