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Thread: Anybody know what this connector does?

  1. #1
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,307
    I'm Tom.

    Default Anybody know what this connector does?

    Picked up a lovely sounding Gate Audio pre from Lawrence recently, in use in the study with a Garrard 401, Trichord Genesis, Pass Aleph M clone and a pair of Tannoy DC6es - really nice.

    But it has a funny connector on the back - seemingly connected to the outputs - just wonder what it is?

    My guess is either 1) earth socket - looks like it might take a banana plug? or 2) some kind of subwoofer output socket of a kind I've not seen before?

    I had hoped to use split RCA cables to run a sub from the mono'd output of the only stereo pair of RCA outs, but it gave me a round loop so I gave up.

    Anyway, could anyone enlighten me, I've shown a bigger picture of the overall layout in case that helps.






    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.

  2. #2
    Join Date: Sep 2014

    Location: Northern Ireland

    Posts: 773
    I'm John.

    Default

    Looks like a 1/4" stereo locking jack socket, looped off the outputs.

    Once inserted the red button has to be pressed to release the jack plug.

    Could this be capable of driving a pair of headphones?

  3. #3
    Join Date: Apr 2012

    Location: Southall, West London

    Posts: 37,234
    I'm Geoff.

    Default

    Quote Originally Posted by JohnJo View Post
    Looks like a 1/4" stereo locking jack socket, looped off the outputs.

    Once inserted the red button has to be pressed to release the jack plug.

    Could this be capable of driving a pair of headphones?

    Yeah, could be. High impedance phones would probably be OK.

  4. #4
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,307
    I'm Tom.

    Default

    Bril. Iíll get a 1/4in to rca adapter that should hopefully drive the sub.
    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.

  5. #5
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 2,001
    I'm Lawrence.

    Default

    Hey Tom glad you like it. I thought it must be designed for headphones but I tried a pair of high impedance Sennheisers and there wasn't much volume so I never really understood it. If it's connected directly to the output sockets as I think it was, I can't see how using this instead of RCA splitters would avoid the same ground loop, but I hope to be proved wrong.

    Sent from my BLN-L21 using Tapatalk

  6. #6
    Join Date: Apr 2016

    Location: Bishops Stortford

    Posts: 639
    I'm Chris.

    Default

    Just an observation, but why would you have a socket to plug in headphones round the back of a bit of kit?
    SW1X Universal Music Server UMS I Signature with Power Supply Unit PSU I Signature
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    Transcription Audio single ended, 211 triode, integrated.
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  7. #7
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 2,001
    I'm Lawrence.

    Default

    Quote Originally Posted by bumpy View Post
    Just an observation, but why would you have a socket to plug in headphones round the back of a bit of kit?
    Didn't Cyrus or someone similar also do that?

    Sent from my BLN-L21 using Tapatalk

  8. #8
    Join Date: May 2016

    Location: Much Wenlock

    Posts: 702
    I'm Gary.

    Default

    Quote Originally Posted by bumpy View Post
    Just an observation, but why would you have a socket to plug in headphones round the back of a bit of kit?
    Because there wasn't one on the front?
    It is easier to seek forgiveness than to ask permission

    Rules are meant for the obedience of fools and the guidance of wise men

  9. #9
    Join Date: Mar 2014

    Location: KY - Scotland

    Posts: 3,337
    I'm Mike.

    Default

    Quote Originally Posted by Lawrence001 View Post
    Didn't Cyrus or someone similar also do that?

    Sent from my BLN-L21 using Tapatalk
    My Claymore mk2 has one on the rear as well

  10. #10
    Join Date: Feb 2010

    Location: Berkshire, UK

    Posts: 3,307
    I'm Tom.

    Default

    Quote Originally Posted by Lawrence001 View Post
    Hey Tom glad you like it. I thought it must be designed for headphones but I tried a pair of high impedance Sennheisers and there wasn't much volume so I never really understood it. If it's connected directly to the output sockets as I think it was, I can't see how using this instead of RCA splitters would avoid the same ground loop, but I hope to be proved wrong.

    Sent from my BLN-L21 using Tapatalk
    It's a lovely thing Lawrence, I tried it in the main rig and while to be fair it's not quite there with the EAR 912, it gave a good account of itself and was extremely musical with good timing, rich timbre and a nice way with acoustic space.

    It's not a gain monster though and I can see how it might struggle with some headphones. I've ordered up the right bits and we'll see whether there's sufficient to drive the sub. For the price of less than a tenner's worth of bits it's got to be worth a try, ground loop notwithstanding.
    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.

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