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Thread: Wanted - First Watt F5 good DIY build

  1. #1
    Join Date: Aug 2010

    Location: Stroud, Gloucestershire , UK

    Posts: 557
    I'm Jake.

    Default Wanted - First Watt F5 good DIY build

    Id like to try a well built F5 power amp in my system as an alternative to valves. Does anyone have one that theyd like to sell please?

    Thanks, jake
    Technics SL-10/many carts - Crayon Audio CFA-1 - Ian's Frugal horn XL

  2. #2
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,305
    I'm Tom.

    Default

    I have one of these on the way for the study ... 20w seemingly based on a Pass Alpeh circuit. The Valab stuff is invariably good quality. I intend to post findings.

    It's taking an extra couple of weeks to arrive at they had to install 240v mains transformers to replace the 220v ones it comes with.

    I wondered after I placed the order (another case of buy first, research later I do this too often) whether it's quite kosher - it could be exploiting Pass IP ... but too late now it's on its way.


    https://www.ebay.co.uk/itm/LP-Audio-...EAAOSwB09YG6R0
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers with Tannoy ST25 supertweeters; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 9 inch and Ikeda IT-407 12 inch tonearms; Cartridges Stereo - Miyajima Madake, Miyajima Takumi, Ikeda 9TT, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912 + Miyajima ETR-Mono SUT; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; tube preamp - Gate Audio tube; Vinyl: Garrard 401 with AT1503 Mk I tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage from Gate Audio preamp; Digital - Trichord Genesis III CDP + Arcam rBlink.

  3. #3
    Join Date: Aug 2010

    Location: Stroud, Gloucestershire , UK

    Posts: 557
    I'm Jake.

    Default

    Look forward to the write up Tom! Looks like a neat little unit.
    Technics SL-10/many carts - Crayon Audio CFA-1 - Ian's Frugal horn XL

  4. #4
    Join Date: Apr 2008

    Location: Cheshire, UK

    Posts: 2,647
    I'm Clive.

    Default

    I'm very interested to know how this works out too.
    TT 1 Trans-Fi Salvation with magnetic bearing + Trans-Fi Terminator T3Pro + London Reference
    TT 2 Garrard 301 with NWA main bearing + OL Encounter mkIII + Ortofon 2M Mono SE
    Digital Fanless i5 Skylake ASUS H110T Windows file server with HDPLEX LPS / Allo USBridge into Ciunas Audio ISO-DAC & Pi/DigiOne into Metrum Musette
    Preamp Hagerman Cornet 2 phono stage, John Chapman's Slagleformer-based AVC-1 into Transcendent Sound Sub Buddy
    Power Amp Temple Audio Monoblocks with Supercap LPS/ 300B WE91 SE Monoblocks
    Bass Amp & DSP Behringer iNuke NU3000DSP x 2
    Speakers 1 Bastanis Sagarmatha Duo with twin baffleless 15" bass drivers per side
    Speakers 2 MarkaudioSota Viotti One

  5. #5
    Join Date: Nov 2013

    Location: Staffordshire

    Posts: 34
    I'm Mike.

    Default

    And me!

  6. #6
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 1,995
    I'm Lawrence.

    Default

    +1

  7. #7
    Join Date: Aug 2010

    Location: Stroud, Gloucestershire , UK

    Posts: 557
    I'm Jake.

    Default

    Don’t let Jerry see this. He HATES the Aleph 3!

    Whilst we’re on the topic of Chinese ‘clones’ ... this is on my watch list.

    https://rover.ebay.com/rover/0/0/0?m...2F122013374050
    Last edited by lordmortlock; 27-12-2017 at 20:46.
    Technics SL-10/many carts - Crayon Audio CFA-1 - Ian's Frugal horn XL

  8. #8
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 1,995
    I'm Lawrence.

    Default

    Quote Originally Posted by montesquieu View Post
    I have one of these on the way for the study ... 20w seemingly based on a Pass Alpeh circuit. The Valab stuff is invariably good quality. I intend to post findings.

    It's taking an extra couple of weeks to arrive at they had to install 240v mains transformers to replace the 220v ones it comes with.

    I wondered after I placed the order (another case of buy first, research later I do this too often) whether it's quite kosher - it could be exploiting Pass IP ... but too late now it's on its way.


    https://www.ebay.co.uk/itm/LP-Audio-...EAAOSwB09YG6R0
    Did they agree to make 240v transformers, I'm surprised they didn't fob you off by saying 220v makes no difference?

  9. #9
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,305
    I'm Tom.

    Default

    Quote Originally Posted by Lawrence001 View Post
    Did they agree to make 240v transformers, I'm surprised they didn't fob you off by saying 220v makes no difference?
    I've dealt with Kevin at Valab in Taiwan before quite a few times both for bits and pieces and for full components. The last big item I bought was a DHT preamp which I asked to be 240v, and as with this new item, it was modified for UK voltage before shipping. When testing it out for me, Graeme 'Valvebloke' said it was spot on for 240v operation and he said he was quite impressed with how it was done.

    And yes, Kevin did get his supplier to make 240v transformers which he then fitted and tested before shipping out, he said his transformer suppliers were familiar with the procedure as he had just done the same for a regular customer in Australia. At no extra charge incidentally. Genunely impressive. As I say this is Taiwan we are talking about not China, the business aproach is far more like you get in Japan than on the Chinese mainland.

    Just checked the tracking btw I think it's in the UK but not through customs yet, not sure what my chances are for getting it this week.
    Main: Speakers 'RFC' Tannoy Canterburys / custom crossovers with Tannoy ST25 supertweeters; Amp - Radford STA100; Pre EAR 912; Vinyl: Thorens TD124 MkII + Ikeda IT345-CR1 9 inch and Ikeda IT-407 12 inch tonearms; Cartridges Stereo - Miyajima Madake, Miyajima Takumi, Ikeda 9TT, SAEC/Excel C3; Mono - Miyajimas - Zero 0.7, Premium 1.0, Edison '78' 4.0 conical, and Shure M44 strapped for mono with several Expert Stylus conicals for different eras of 78s; Phono stage and SUT from EAR 912 + Miyajima ETR-Mono SUT; Esoteric Sound Re-Equalizer for equalisation of early mono and 78, switchable in from tape loop; Digital: Audio Note CDT2/II transport, heavily modded AN Kit DAC + Mutec MC3+USB.

    Study: Speakers - Tannoy DC6; Amp: Pass Aleph 'Mini'; tube preamp - Gate Audio tube; Vinyl: Garrard 401 with AT1503 Mk I tonearm and vintage Ortofon SL-15e with matching Ortofon 2-15k SUT; Phono Stage from Gate Audio preamp; Digital - Trichord Genesis III CDP + Arcam rBlink.

  10. #10
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 4,392
    I'm Alan.

    Default

    Looks rather good Tom, dual mono to boot


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