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Please note: Our Italian chassis partners Hifi2000 are closed for summer holidays between the 3rd to the 25th of August 2019. 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.
The first two batches sold out before we had a chance to email the main diyAudio store mailing list, and the reviews are in. Feedback is that it also does make a great little pre-amp. Batch 3 of the diyAudio / Pete Millett collaboration headphone amplifier the Starving Student II is now available...
You can grab them at their respective store pages: Universal PSU PCB Burning Amplifier Gain Stage PCB Aleph J PCB
Completed my F5 T.
DIY audio did a fantastic job communicating with me every step of the way.
Did have an issue with not enough standoffs (provided amount listed in description).
Quick response to resolve and got supplier involved.
For people considering building F5 T,
Chassis and back panel kit $500
Power supply $250
Amplifier boards and components $250
Cost me approx $1000
I also built an ACA amp while living in Korea and the DIY team was incredibly responsive to some of the shipping issues there.
Chassis was a little expensive but if your doing an F5 you probably don't want to go smaller. Assembly was easy and the chassis look great and it's pretty much made for the Diyaudio boards. Rear panel has no center support and while it seams thick enough pushing on it too hard while inserting a power cord will bow it in so think about adding a brace. The predrilled front panel made mounting the handles easy. When assembled one of the handle bars was loose and the other fine so it may need a little shimming. That said I'm actually pretty happy with the chassis and would purchase again. Chassis arrived in California in 5 or 6 days.
I have several other DIY headphone amps. This one has the most well behaved turn on and turn off transients, i.e. almost none. No worries about damaging delicate drivers. Whammy has absolutely gobs of gain without noise. It can easily drive even low sensitivity planar magnetic headphones. I'm on #2 of 5 different front end opamps that I bought to try out and the differences between #1 and #2, although subtle, are there for the listening due this very clean circuit design. DIY audio doesn't get any better than this.
Build includes switching HP jack, preamp output jacks, noise filtering IEC inlet, front panel power switch and LED. All easy to add, although the Hammond chassis does get a bit tight and parts layout a bit critical.
High quality boards and very good sounding pre.
Very good quality PCBs and fast delivery. I recommend it to everyone.
Built one of these and shoe-horned it into the ACA enclosure to make a Pass Korg B1/ ACA integrated....the Amp Camp Amp sounded very good but a mite low powered until I found the Klipsch RP 600 M speakers ( approx $550 )...these are more efficient than most bookshelf speakers ( quoted as around 90dB/watt ). Prior to finding the Klipschs I built a pair of Super Swan horn enclosures for a Fostex 100mm single driver. That also sounds good and efficient enough but the construction of the cabinets is an interesting challenge not for the faint hearted. The Klipsch is a good choice.
I have 4 other DIY headphone amps and this one is the quietest and has the most well behaved power turn on and turn off characteristics. I surmise that's due to its excellent internal power supply. The circuit has gobs of gain, enough to drive even my low sensitivity planar magnetic headphones. I added a 2 amp noise filtered IEC inlet, power switch/LED and output jacks to the original design. This unit functions well as a preamp, quite beyond my expectations. The new heart of my desktop system.
Fantastic pcb! Top quality! Very fast delivery around the world (USA-Germany) in under
one week.
I found a pair of TOSHIBA 2SJ109 and I thought I should build a BA-1 poweramp with the
singleended follower. Not finished yet. Intake board is done.
Greets
Dirk
The JFETs have been delivered ultrafast (USA - Germany) in 4 days! Including customs!
I've got one excellent match and one pair that matches really good. The other four JFETs
will be used where no matching is required. These JFETs are extremely good substitutes
for the more and more difficult to get TOSHIBAs.
I bought a second set. Great!
Greets
Dirk
Excellent PCBs which arrived (eventually). If you are buying in UK be aware that whilst diyAudio Store ship promptly and DHL get them across the Atlantic pretty quickly, they then arrive and sit around awhile in Customs/Royal Mail. You might even get an automated message or two from the store telling you that the boards failed to be delivered. Fear not and have patience. Postman Pat will pop a card through you door demanding payment for import VAT and possible Duty depending on what you bought plus his hefty handling fee, which can all be paid for on-line, and in a day or two your purchase will be delivered.
Very happy with my amp camp.
I bought the aca 1.6 kit as my first project, it was straight forward to put together.
It sounds fantastic, very smooth. I use it with 8ohm 88db 3 way speakers, the sound good but miss tight bass, nevertheless the midrange and highs are fantastic and non-fatiguing.
I am going to build the M2X to have some more power.
The aca is definitely a keeper, also it dissipates 40watt vs the 160watt of the m2x, so useful for the hot summers.
Excellent store, good comunication and ultra fast shipping.
Very good product and support.
Thanks to all Diyaudio community.
The boards are of excellent quality. Delivery in under 3 days from USA to Germany - supersonic!
Still collecting parts.
Greets
Dirk
I found a pair of original TOSHIBA 2SJ109 BL - I was searching for a long time.
Now it was time to start this build.
The BA-1 - pcb is of excellent quality. Delivery was extremely fast as well customs.
The fun starts now....
Can´t tell anything about the sound - not finished ;-)
Greets
Dirk
After a long while of soldering, three months at least, I finished my second diy project - A Elekit TU8600 tube amp. I told all my friends that there are 2 things in audio I wouldn’t touch. 1 is vinyl the another is tube powered amp. Obviously, I break the latter one now. Faced a bunch of parts, I had a doubt that “can I really get it done?” However, the manual was clear & straight forward, even there’s no photo instructions like the amp camp amp did. Used a long while because I wanted to enjoy the processing. Part by part, step by step. For me it’s a great satisfaction to see it stuffed full. Watch those tubes light up the first time. It’s really some strangest feeling. Describing the sound texture isn’t my best. All I can tell is really a big difference with all equipment I have. And I understand why there are a lot of tube-philers after decades of solid state occupied the market. I need to thanks Victor Kung for helped me some up grade parts, even I didn’t install them all now. But after A period of time to listen. I’ll put them all for a deep comparison. I, definitely, believe this’s not the only one vacuum thing in my life.
Ce petit ampli a tout d’un grand...
Les composants sont de qualité, les circuits imprimés sont admirables de conception.
Le montage a été facile et rapide, merci au tutoriel très didactique.
Les débutants sont rassurés par des explications pas à pas, précises et documentées.
L’écoute est surprenante: tout le spectre sonore ( presque) se développe avec une amplitude profonde et large. Chaleur, onctuosité... de la pure classe A. Il chauffe vite et fort et c’est bien ainsi.
La puissance est suffisante. Prévoir des enceintes sensibles d’au moins 95 db pour tirer toute la quintessence du signal.
Conclusion: un excellent kit qui vient rejoindre la cour des grands.
Musicalement
All arrived well wrapped and protected
Quality very good for this price
Will do the job perfectly
Coming from the Heathkit, Dynaco and Hafler kits generation, building this kit was an easy and fun project. The build instructions and step by step layout was easy to follow. For the diy person there's no better enjoyment than to build your own great sounding audio gear. This Amp Camp Amp is a very clean sounding amp, you will not be disappointed
Recently a friend came with his Whammy and we compared it with my 30+ years Threshold preamp (another great Pass design). My friend said that the Whammy wasn't as beatufil but stage was better and transparency great (the MK II carries a lot of switches which doesn't help).
So I placed an order for my own Whammy, (to be used as a preamp) it arrived in less than a week to France (!), build it but replaced the rectifier diocese to something faster, the 1uF coupling caps with some EVO Gold caps from Mundorf, and replaced the OpAmp with my all-times favourite LM4563. All in all in one afternoon thanks to excellent illustrations on diyaudio.
The result is... shocking!
Still this impressive transparency and stage, but with some beauty that the MK II couldn't match.
Amazing. A real bargain, and killer.
Now it will get a motorised pot, input selector and the MK II will go into retirement
It was a pretty straight forward. If you follow the build guide and bom. I’ll be buying a couple for my future builds.
An absolute necessary item in your DIY construction.
Everything included.
Beautiful appearance. all pre drilled and tapped holes, no problem.
Trying to get an F5 up and running
I bought the 4U along with the M2X boards and built the M2X. Great enclosure, heat sinks drilled and tapped for boards and MOSFETs. Amplifier is dead quiet using this enclosure, made building the amp so easy, not so big to be difficult to lift and move around.
these are very nice boards indeed...though I only bought them for the diode bridge section..which is rather neat as will be building my PSU on a discrete basis.....just a shame the Diode Bridge board was not sold separately...but it does at least break away from the PSU board....neatly..
.will keep PSU board for something else...as my caps are coke can size...and will be fitted with copper bus bars....
perfectly packed.....all hand selected..and checked.....wonderful....how often in DIY electronics do we find that?
DIY Audio have taken out the hassle of part purchasing...selecting allowing more time for the building.
Great job!
High quality pcb. I really appreciate the many options for connection.
A little pricey, but perform well and are very convenient.
I keep extras on hand, never can tell when the itch to build another Firstwatt clone might come along.
