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Thread: Orchard Audio's PecanPi - Review

  1. #31
    Join Date: Mar 2019

    Location: New Jersey, USA

    Posts: 77
    I'm Leo.

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    Quote Originally Posted by Sherwood View Post
    Two questions:

    b) what type of power supply does it come with and did you try any other psu?
    It comes with a 9V 2.5A switching power supply. The connector is a standard 2.1mm ID 5.5mm OD, so you could easily swap in a LPSU if you wanted to. Ifi make a 9V 2A version with this power socket.

    I would stay away from any power supply that has less than 2A output especially if using the unit with headphones.

    Also the board has built in very low noise linear regulators for all of the analog audio circuits that is why it sounds so good even with the switching power supply.
    Last edited by orchardaudio; 12-05-2019 at 17:01.

  2. #32
    Join Date: Mar 2019

    Location: New Jersey, USA

    Posts: 77
    I'm Leo.

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    Quote Originally Posted by Sherwood View Post
    Two questions:
    a) were you able to assess performance using the xlr connectors and if so did the channel imbalance persist?
    Yes this would also be interesting to see if the noise is there when using the XLR connectors.

    The XLR connection has 6dB better SNR and the common mode noise from whatever else is in your environment should be eliminated.

  3. #33
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,020
    I'm Oliver.

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    Channel balance sorted. See edit
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & 2x LPSU's with Volumio & JRiver
    Amplification: Nelson Pass DCB1 with Khozmo 48 Step Series Attenuator & Krell KSA100 MK2 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  4. #34
    Join Date: Mar 2019

    Location: New Jersey, USA

    Posts: 77
    I'm Leo.

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    Quote Originally Posted by Bigman80 View Post

    EDIT:

    With Leo's permission, I decided to take the PecanPi apart. I mounted it on to my own Raspberry Pi and guess what!, Channel Balance is spot on!

    A quick blast through the test tracks demonstrates that even though I hadn't thought the skewed balance had affected my judgement, it definitely affected the performance because this thing has just gone up a few steps. I thought it was excellent yesterday, now its superb.

    Seems the issue was the RPI. I am really pleased I decided to pursue this as its just given the Katana some real stiff competition when it gets here.*
    Great news, that confirms it must have gotten damaged during all the shipping.

  5. #35
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,020
    I'm Oliver.

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    Quote Originally Posted by orchardaudio View Post
    Great news, that confirms it must have gotten damaged during all the shipping.
    It happens mate. Glad we managed to sort it out as I really was sad it wasn't quite right.

    That said, I think pairing it with the RPI3+ has improved this massively so it's only right to say so. It's a fantastic listen now.

    You'll struggle to get this back
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & 2x LPSU's with Volumio & JRiver
    Amplification: Nelson Pass DCB1 with Khozmo 48 Step Series Attenuator & Krell KSA100 MK2 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  6. #36
    Join Date: Oct 2012

    Location: The Black Country

    Posts: 4,946
    I'm Alan.

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    Excellent result re the channel balance, particularly with the increase in SQ as well.

    Can't quite understand how the Pi would affect it though.

  7. #37
    Join Date: Feb 2016

    Location: Melksham, Wiltshire

    Posts: 618
    I'm Peter.

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    Quote Originally Posted by orchardaudio View Post
    Great news, that confirms it must have gotten damaged during all the shipping.
    Great news, a challenge for the Katana

    I doubt there will be much in it anyway but interesting to know

    As I said before, if you don't like the Katana I'll eat my hat..... Shame I don't have one


    Sent from my iPhone using Tapatalk

  8. #38
    Join Date: Mar 2019

    Location: New Jersey, USA

    Posts: 77
    I'm Leo.

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    Quote Originally Posted by Firebottle View Post

    Can't quite understand how the Pi would affect it though.
    Maybe not the Pi but now the software version is different too and with different settings. I wonder maybe it's something along these lines.

    On the performance front the Pi3B+ does have more processing power so if the player is forced to do a lot of format conversion maybe that is having an affect.

    When I did my testing I did both Pi3B and Pi3B+ and results were identical, that being said for all the performance tests I only used PCM files so no special conversion was required. I will have to revisit this.

  9. #39
    Join Date: Nov 2015

    Location: Wolverhampton

    Posts: 9,020
    I'm Oliver.

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    Quote Originally Posted by Firebottle View Post
    Excellent result re the channel balance, particularly with the increase in SQ as well.

    Can't quite understand how the Pi would affect it though.
    I could be attributing the effect/improvment to the Pi when the act of re-homing the DAC could be the reason. Slightly loose connection etc. Anyway, all is well.
    Analogue: Technics SP10 MK2 > Phonomac AT-1010 MK6 tonearm > Ortofon Kontrapunkt b > Bigbottle Jfet MC Valve Phonostage (Telefunken Valves)
    Digital: Raspberry Pi 3+/Allo Boss 1.2/Isolator 1.3 & 2x LPSU's with Volumio & JRiver
    Amplification: Nelson Pass DCB1 with Khozmo 48 Step Series Attenuator & Krell KSA100 MK2 Amplifier
    Cables: SPOTFIRE Speaker Cable & SPOTFIRE IC Cables & SPOTFIRE Tonearm cable
    Speakers: Pioneer CS-77A

    Price List For SPOTFIRE Cables here:https://bit.ly/2Uxiv3j

    Alternative reading: http://www.audioaddictsforum.com

  10. #40
    Join Date: Mar 2019

    Location: New Jersey, USA

    Posts: 77
    I'm Leo.

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    Preorder pricing end on May 31st.

    When you preorder you are entered into a raffle to win my company's next product - pair of 100W monoblock amps (MSRP ~$750).

    https://orchardaudio.com/shop?olsPage=products
    Last edited by orchardaudio; 15-05-2019 at 20:02.

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