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RJM Audio

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CrytalFET phono rev. 1.4e boards
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The 995FET op amp modules from Sonic Imagery Labs are impressive. Clean and dynamic sound.
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RJM Audio's profile photoVictor Panics's profile photo
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I see it's easy for you ^)

Don't you want to buy something interesting - made in Russia for your constructions? Or exchange.
I heve some interesting and rarely parts and constructions for DIY, which are really cheaper because from Russia...
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RJM Audio

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I've built a set of 31n Sapphire boards to try out a 2520 module discrete op amp.
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Furutech FP-900 http://bit.ly/1OiNet7

These 24k gold plated RCA jacks are a bit overpriced outside of Japan, but I recommend the design. It's made so it's very convenient and reliable to screw tight to the chassis, without slipping or rotating.

The main downside is the chassis clearance holes are 12 mm rather than the standard 9.3 mm. So once you go with these there's no going back.
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Technics SU-9070. Keep coming back to this JEFT input discrete line stage. Will try to mock something up in LTSpice.
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This USB curve tracer is a bit more expensive than some others out there, but has the distinguishing feature that it will output up to 30 V or 1 A, a fair bit more than most of the competition.
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RJM Audio

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Plitron 2x32Vct transformer I bought on sale from partsconnexion for $~13.

p/n 5668-B2-00
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Replaced my 1.1a #crystalFET boards with rev 1.3c and Multicap PPFXS.
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Is a cheap USB oscilloscope good enough to be more useful than an old analog model?
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Phono stage circuits, numerous and various.
Sound and sound systems - an informal look. Sundry styli interfaces (RIAA preamps).
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Discrete op amp modules, including a FET 2520 module I hope to try in the Sapphire headphone amp. 
home: High Performance Audio Solutions Updated January 27th, 2016. The Sonic Imagery Labs Philosophy While our products focus on practical solutions for the recording, broadcast and music industries, one thing remains consistent; our passion for inspiring musical creativity and innovation ...
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Thanks for the tip! I'm buying prebuilt here because I need FET input, the basic 918/990 circuits won't do unfortunately.

http://capi-gear.com/catalog/product_info.php?cPath=71_72&products_id=527
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This RCA jack has a design flaw. The front gold-plated shield connection has to pass through the red anodized aluminum section. If the anodizing is just a bit too thick, the electrical connection is not made.

I've previously used this part with no problem, but the latest batch are no good. Grrr.
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Have them in circles
201 people
George Urse's profile photo
Jose Francis's profile photo
sithanong THANAVANH's profile photo
Eric Noya's profile photo
Sunshine Cleaning And Restoration's profile photo
Audiogurus's profile photo
Joseph Tam's profile photo
デュラララみなみ's profile photo
Mason Austin Green's profile photo
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A resource for the design and construction of high-fidelity audio equipment.
Introduction
RJM Audio is my hi-fi hobby site. I design and build audio equipment, from interconnect cables to headphone amplifiers to voltage regulators though I'm best known for my VSPS and Phonoclone phono preamplifier circuits.
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