diyAudio Store

I've gone through half a pound of Cardas solder so far in the pursuit of DIY learning....The Cardas is very good—but FireMetall is BETTER. The diameter is PERFECT, flow is awesome, flux is very consistent. Well done DIY Audio!!!

Everything you need for finishing the back panel of a HiFi2000 amplifier chassis. All first class stuff. I especially like the integrated IEC power connector / fuse holder.

Easy and fun build. Very well documented and the the panel PCBs are seriously ingenious. At least for me, the case work is usually the biggest struggle... PCB is great quality as usual and the price very fair (admittedly I ordered during the last Black Friday sale).

So, how does it sound? With the HD600 the stock Noir sounds better to my ears than my heavily modded BH Crack w/ Speedball (Mullard and Russian tubes, fancy output caps, Alps pot, Triad choke etc.). For some reason the Noir manages to reveal a lot of details, whilst being a very comfortable listen. "Natural" comes to mind. The biggest surprise was however when I tried it as a preamp with my F5. The Noir somehow gets rid of the slight harshness of the F5, while being very detailed at the same time. Same as with the headphones, the combo sounds very natural to me. The base has a lot more texture than my tube preamp. Obviously, it's not an ideal preamp with just 1 input and it has too much gain for my system, but somehow I can't stop listening to it.... In fact, I'm listening to that combo while writing this.

Beginner or experienced DIYer, everyone should give this simple and elegant design a go.

These are wonderfully configured and constructed PCB's for assembling "pi" style C-R-C power supplies. They include solder pads and circuit traces for inserting diodes, but can also be used with monolithic full-bridge rectifiers, like the excellent IXYS FRED-based fast recovery types I like. They also include solder pads for block terminals to make quick connect hook-ups easy and safe and LED voltage indicators to make trouble-shooting less trouble-some. Very highly recommended for your next amplifier project with either single-ended or bi-polar power supplies.

I wanted another Balanced input/output preamp, as my BZLS is from a 1990's design. So I bought two boards which are now populated, SMD JFET's a breeze to solder. I like the fact that Wayne specified JFET's and components easy to find and purchase for this project.

Shipped incredibly fast. quality of finish is excellent. Only problem is that the top and bottoms are held on with tapered head screws. Tapered screws are meant to be countersunk. because it is not the head does not seat properly and sticks up slightly. I will be replacing with a button head design that will stick up still but look correct. Minor quibble.

Good stuff Good people.

been looking for a linestage that fits my M25 (Babelfish) better than BA3FE or other chippy preamps i tried.
this is it! clear sound - not mumpfy, not sharp.
till now i've just made the standard model running on 20VDC. no bigger semis in Q8/10 position.
still looking for a nice housing.
Thank you Wayne!

High quality board as usual!!! Very nice project!!!

Sorry, I forgot to post some pictures.
Enjoy your music!
Mauro

This is my first DIY creation and I was thrilled and moved by the first start! I had a lot of fun building it, I followed the thread where many people spend a lot of passion and time, helping those like me who have little experience, many thanks to Nelson and all DIYAudio members! Great preamp, I'm sure that for years and years it will be my point of reference.
Cheers, Mauro / rmauror

I built a pair of mofos and these are a joy to listen to. Often I listen to music and think that’s glaring or harsh or not revealing, but not with these. No, instead I am smiling, drawn into the music and pleasantly surprised by what I am hearing. Oh, and it is so simple and doable. So I bought two more sets of boards to build a double mofo. That’s going to be more work, and I am sure it will take me months to complete. I am mofo crazy now.

I did a lot browsing on Ebay and Amazon for amplifier chassis. When you compare features vs price you can't beat this Pesante chassis. Some of the Chinese enclosures seem like a good price until you see the $40 shipping fee. The chassis on Diyaudio ship free, they're sturdy and easy to work with.
I would recommend getting the extra baseplate. You can attach all the guts to it and just drop it into the case. Easy peasy.

Thank you very much for the great service and delivery.The products are of excellent quality and I will surely be returning to your store for future needs

A much needed upgrade from cheap asian stuff that I found to be too time consuming when doing any connection.
This solder is as close as your going to get to the old school lead , has a low temperature which eliminates need for fancy soldering irons / stations.

A quality introductory / up starter product thats ideal for hobbyists who needs the odd repair job about the home done quickly.

Got the PCB and front and back panels from DIYAudio. They are well made and fit the recommended chassis perfectly which I purchased seperately using the DIYAudio link. Great service as always. Still awaiting the parts from Mouser as a couple of the items on the parts list were on back order but looking forward to the build.

Great service from DIY. Quality PCB and parts. Looking forward to assembly when I complete the adaption of the Hammond chassis I have bought

It was a very helpfull guide and I spent a nice time building the WHAMMY preamp.

As many folks during COVID-19 lockdown, I was looking for projects and this one fitted the bill nicely--even though I wasn't in need of another headphone amp. The kit is very relaxing to build, even without the well-written and well-ilustrated instructions. Basically, the markings on the PCB provide sufficient information for putting it all together. Even though I have considerable experience with electronics, I would say that with patience and care, this kit could be assembled successfully by a complete beginner. I took my time to do it over two evenings, going from lowest height (diodes), to resistors, to highest parts (heatsinks). For those, my vintage 1985 Weller gun came in handy. The only little gripe is that in my opinion the headphone jack should be soldered AFTER the whole thing is assembled, as soldering it with the plastic in contact with the PCB resulted in my case in a slight vertical misalignment with respect to the front panel hole. The switch and volume knob were perfectly aligned however, so it's definitely a phone jack issue. I decided to solder the current source LED on the component side of the PCB. I might be old-fashioned, but tubes usually don't glow blue... At such low heater current, these don't glow much anyway.

I feed it from the Tape Out of a Rotel RC-995 preamp via 25' of RCA interconnect (yes!) and the sound is sweet. So far I have only used the constant current source mode. The tubes are very microphonic, but since the heater current is very low and the tubes remain cool, any tube damper would likely fix this. I haven't bothered with that yet, since the amp is on a small IKEA bed table and I don't touch it. I have used it with Grado SR225e, B&O H6, Audio Technica ATH-M50x and... a pair of Koss Porta Pro. Great kit that is easy to assemble, sounds very good and looks completely professional. Makes a perfect gift--assembled or not!

A very nice design. Enjoyed the build, was straight forward and not too pricey of a BOM. Excellent sound. Going to play around with a couple different OpAmp (almost like tube rolling).

The boards are absolutely first quality. These are for my sixth Pass DIY project and second Aleph J build which will have a dual mono power supply this time. With all the support available through the Pass forum my first five builds have all gone smoothly with no start up issues at all. They sound great and work perfectly.

One can't go wrong with any of the parts kits from this shop, including for the F5. All parts had very accurate values, no need to go searching suppliers for alternates as the best was already included in the kit.

This is my review of Pesante 5U the first thing that impresses me is the paint quality is excellent, metal is heavy and I love that the only thing that got me to confuse is the screws they are similar types and I didn't know which goes to what, it will help if on the instruction there is a small section with at least shows where those screws go by the way packing is excellent well-padded this build you see here have two 300 mm long heat sink and they look small on the case so that gives you an idea of how big is this chassis other than that I'm really pleased and happy with this chassis

I bought the kit toward the end of summer 2019, built it during the fall. Building the amp was great fun. The instructions were easy to follow. Sounds great with an inexpensive passive preamp (Bellari) and a PAS-3 as my phono preamp. My only reservation is power consumption. I was surprised to see it drawing 90 watts for just 8 watts/channel of output. I suppose that's the nature of Class-A design. And 90 watts is much better than the 190 my old amp was using.

I used these to build a Pass ACP+ preamp. Worked great!
Can't get them anywhere else and these work as advertised!

Thank's a lot for that nice preamp kit, that makes may corona-lock quite bearable so far. The JFets were very well selected and the parcel quite fast on the way - the delay was at the german custom... Assembling was easy due to the cute layout and proper made PCB. If there really are differences at the microphonic behavior of the tube, i got one of theeeese, so i couldn't let it shine through a frontglass as imagined before. But with a double layer of plaster-board-absorber-foam and a piece of lead it's finally quite on the board. While thinking about the case for it and an appropriate amp i am listening with a 300Ohm-Sennheiser - and it sounds great! All the best greetings and wishes from germany to You to stay healthy and well in this times!!!

I bought the both the PCB and parts from DIYaudiostore, and soldered all the parts during two evenings. The instructions were easy to follow. I acquired a suitable aluminium enclosure, which required some metalworking (drilling holes and making threads). The amplifier is driving my 600 Ohm Beyerdynamic headphones with ease. Very satisfied with the sound, and it was fun to build!

Totally fun build. Great guide—in true DIY spirit. I listen to Noir daily during desk duty. Also have 2 Whammy's by comparison. Noir is its own gem. Pick some phones—pick some flavors—I'm an HPA fanatic and love them all. I interviewed several pairs of headphones—Beyer 1990 pro are a great match for Noir—to me—and my ears. Massdrop Focal Elex are awesome too! Oh and switching jack????? Makes a solid preamp too!

PCB quality is top notch. Mark is a bada$$. Get the with chassis version—it's unique.

Love this preamp—I was lucky enough to get a pre release to build (my images are NOT of the final PCB). Clean, clear and detailed—with Aleph J—nice combo I think. Headphones out with a switching jack—YES—and it's great! Check the thread on the DIYAudio forum for build ideas. There's some good info. BUILD THIS PREAMP!

As an absolute beginner with electronics and building any sorts of amplifier it was hard to understand what parts worked and what would not. This kit really helped me with an all-in-one solution (except for jfets) and made my first build a really fun project. Will definitely buy more from here for future projects.

I recently built the M2X unit. I ordered the 170 devices but it seems I should have ordered two matched pairs of 170/174 devices. If possible can someone clarify what should be ordered to build the M2X ? It is entirely possible I missed something obvious and sorry ahead if so. Thanks for providing the difficult to source parts!

Hello DIY ers. Ordered the M2X PCB set. Arrived quickly. Good quality boards, designators clearly marked, Layout design is good. The various driver boards are fun to experiment with. So far I haven't been able to hear any significant differences in the various driver boards. I will do more critical listening after I run the unit a while and gain confidence before connecting to my best speakers. I added Mill-Max pin and socket sets for the add on boards. Some special attention required but super convenient. The amp sounds very good, and I am critical on audio quality. I have observed many reports describing sound and believe words fall short in expressing the quality of sound. This amp provides clarity. What I notice is instruments sound like they are 6-8 feet in front of me with other amps. They sound like they are 2-3 feet in front of me with this amp. Multiple instruments maintain their identities better with this amp. Still digging in to various recordings and finding enjoyment in the pure sound. Thanks to the folks who worked to provide the DIY kits. A big thanks to Mr. Pass for sharing the designs of incredibly practical circuits that shine with audio quality.

diyaudiostore is just as reliable as a shop could be. Plus, they're friendly, helpful, and have a sense of humor. They make one feel a bit at home.