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First Watt Clone - The DIY M2 is a class A amp that follows Nelson Pass's design and tries to clone his work. NP is a big supporter of DIY and released this schematic recently. As I already own 2 M2s, I built this to run my center channel K402 bi-amped. The completed tested and working AMP: I have never built anything like this before and if not for Wdecho, not sure I would have attempted to. With his guidance and help in parts selections and oversight during the build he managed to help me build this from afar without me electrocuting myself. I want to share my experience with you, to encourage you to try and build a SS amp or tubes or line stages whatever. If I can do it, so can you. To start I suggest having a nice soldering iron. I bought a Hakko for this build and have no regrets, part of my success is good clean soldering. Below is what I spent, I spared no expense (but didn't spend a fortune either) and ended up with a nice quiet AMP. Budget: M2 Boards - $28 (2) M2 TF Edcore - $22 FWPS 400 18v TF - $65 Case - $480 Small Parts - $125 Total = $720 Audio Boards http://www.diyaudio.com/forums/group-buys/286699-gb-pass-m2-clone-boards-120mm-ums-spacing-tea-bag.html PS Printed Board http://diyaudiostore.com/collections/printed-circuit-boards/products/universal-psu Case http://diyaudiostore.com/collections/dissipante
I began putting a new High-End system together about 6 months ago , it is now complete and pretty much optimal with everything broken in . I went with the First Watt SIT-2 amp because I thought that either the SIT-1 or SIT-2 would be my idea of the best possible match up with the Danley Sound Labs SH 50`s for in home use ( Not for Stadium or Concert hall use ) , I have used only Single ended tube electronics ( 300B , VT-52 , 2A3 ) for the last 35-40 years , and most of those years those tube electronics were driving a pair of Klipsch La Scala`s . I also had some Lowther horn speakers ( Hated them ) , and klipschorns briefly ( I used them in there original state , and later with the Klipsch K-402 horns ) . One of the reasons I wanted to make this post is because I am happier and more satisfied with my audio set up then I have ever been before in the many years of my audio hobby . I can`t say enough about how much of an amazing amplifier the First Watt SIT-2 is , and how amazing the Danley Sound Labs SH50 speakers are and the synergy between the two . My new audio set-up has exceeded my expectations . I have included the details of my new audio set-up below . My main area of interest in the audio hobby is the minimalist philosophy with high sensitivity speakers ( Horns ) and low powered amplifiers ( Low powered , smallest , and simplest designs possible are the best sounding amplifiers ) . I believe that the First Watt SIT-2 would sound amazing with any of the Klipsch ( Heritage horn ) speakers . I am planning on putting together a 2nd stereo system in my basement with Klipsch K-402 horns and the ClaudeJ1 Quarter Pie bass bins for the lower frequencies in either a 2 way or 3 way set-up and maybe using it for analog with a turntable . I have included all the equipment I am using in the new system below . Danley Sound Labs SH 50 Speakers 4 ohms First Watt SIT-2 Amplifier 8 watts into 4 ohms ( Discontinued Sept/2017 ) Pass Labs XP-30 Pre-amplifier Line level McIntosh MR-71 (Tube) FM-Tuner Vintage ( Restored ) Rel Stadium III Sub woofers ( Pair ) 1 per channel APL NWO-Master Universal Transport/DAC ( Esoteric UX-1Pi ) CD Transport and outboard Tube DAC
I haven't seen much / any discussion of First Watt amps on this forum. The First Watt designs seem like they might be a good match for Klipschorns, Cornwalls, or LaScalas. Has anybody paired a First Watt amp with any of the heritage speakers? If so, which First Watt amp and how did you like it?