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Thread: Akitika MM phono stage

  1. #1
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    Default Akitika MM phono stage

    This is a kit available as a stand alone PCB or Pre amp they also have a power amp kit.

    I bought just the phono kit at around 100 USD, well made pcb and very easy to follow instructions.
    ICs are 5532 and 5534s, adjustable gain in 3dB steps, adjustable input C and filters all with jumpers.

    I finished it yesterday and had a play last night, very impressed although it could do with a few hours under its belt.
    Other gear is my Rock, RB250 (with j7 magic), AT OC-9/III MC, 1:10 SUT alternated with a Boozehound Labs MC pre pre (also a nice kit), Amp is a Copland CSA29 into Castle Howard S1.

    I can lift the lid if anyone would like to see inside.
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    Last edited by Batty; 9th January 2016 at 02:37.
    I have a Rock and I'm not afraid to use it.

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    Lifted the lid anyway so here are the innards.
    Attached Images
    I have a Rock and I'm not afraid to use it.

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    Any links to the kit Batty, that's impressive for the price of a Cambridge audio.

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    Search Akitika, I only bought the PCB and components, the power supply , toroid and chassis I bought elswhere, total cost was about $225 AU plus my time and wire (Ethernet cable).

    I was going to just drill a 5mm hole through the chassis for the power on LED but changed my mind, 1.5mm hole counter bored on the inside to 5mm about 3mm into the 5mm plate, nice small power indicator (stole the idea from MF but didn't realise it at the time).
    Last edited by Batty; 9th January 2016 at 02:40.
    I have a Rock and I'm not afraid to use it.

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    http://www.akitika.com

    website linky.
    I have a Rock and I'm not afraid to use it.

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    Looks the business Batty and for that price you can't complain.

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    I'd use all the right parts but not necessarily in the right order.

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    Sounds pretty good too.
    I have a Rock and I'm not afraid to use it.

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    looks win, nice assembly. Not sure I'd want to use cat5 cable for it, it's not really audio quality, would be worried about noise, but if it works then cool.

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    Cat 5 was all I had lying around, it is virtually hum free, but I will be upgrading the wiring at some stage.
    I have a Rock and I'm not afraid to use it.

  11. #11
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    I have used a Supreme Sound discrete op amp in the output stage, what a difference, more detail across the whole frequency range. Originally had an NE5532 fitted.
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    Last edited by Batty; 23rd March 2016 at 08:38.
    I have a Rock and I'm not afraid to use it.

  12. #12

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    I've been shown that the power supply is king here, even with piddly op-amps. I'm told that NO discrete op-amp such as you have will be as good as the IC that came out due to added noise and distortion - please don't shoot me down here, but the tiny bit of work I've done here on my own active preamps and the phono stages I make up has shown how utterly transparent a simple IC op-amp can be and also in a phono stage how much better an overkill power supply can be - and I mean power amp size feeding the regulators in the phono box, one +/- unit per channel..
    Turntable bodger, NVA builder and NVA's loan scheme administrator

  13. #13
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    The psu I built for it is oversized 30VA toroid (from memory) for a Phono pre.
    I have a Rock and I'm not afraid to use it.

  14. #14

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    Nah, I mean a 120VA with HUGE capacitance per channel... I didn't believe what this could do for a couple of 20V chips per channel, but it did - cough... The Akitika stage looks more complex still, so just a thought and NOT a criticism in any way I promise.


    I looked on the website. Looks a load of fun and the preamp interests me greatly. Workload for a living would get in the way of construction though sadlyb ut seriously, thanks muchly for sharing..
    Turntable bodger, NVA builder and NVA's loan scheme administrator

  15. #15
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    Over specc'd PSU's and big capacitance are a pretty orthodox way of gaining fidelity. Kinshaw kit has done this for a long time as had others. When you go for mass production and transport costs though this usually leads to compromise, particularly when aiming at the budget sector. Hence finding a component that works better without that significant investment in time and space is a worthwhile approach IMO.

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