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Thread: Sold: Joe Henry-built, Nelson Pass Aleph 3 Class-A Amplifier

  1. #1
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default Sold: Joe Henry-built, Nelson Pass Aleph 3 Class-A Amplifier

    **Sold - to Andy who also bought my Edingdales **

    Part 2 of Big Bob Joylove's Big Sell Off…

    As much as it pains me to shift on three superb components, an upcoming house move and huge investment in one of my companies, which is almost ready to earn mega bucks, has forced me to part ways with some Hi-Fi, and temporarily downgrade. Having said that I've had two amazing years with these components and my set up has been simply the best I've ever owned.

    Second on the block is my beautiful Joe Henry Aleph 3 clone. This is a fully balanced (also single ended) full Class-A 30w power amp, and it is absolutely stunning. Inky black silence, not a hint of hiss or artefact; just pure Class-A musical power.

    In addition to being an Aleph 3 clone, it has had some significant upgrades at build time. Rather than me try to explain it all, I'll just list the spec as compiled by Joe himself…

    Dimensions
    50cm Wide
    40cm Deep
    22cm High

    Speaker protection
    Dual toroidal transformers
    Dual 50 amp bridge rectifiers
    Dual power supplies
    160,000uf Elna capacitors
    Double-sided thick gilded PCB boards
    Power Soft start circuit
    Blue LED on/off switch
    Input differential Transistors using the new US FU9210
    DC blocker
    Precise matching mosfets
    Supply rail fusing
    XLR balanced inputs
    RCA inputs
    Audio grade binding posts

    SPECIFICATIONS
    Gain 20 dB
    Freq. Response - 0.5 dB at 2 Hz, 100 KHz
    Power Output 30 watts/ch 8 ohms
    60 watts/ch 4 ohms
    60 watts/ch 2 ohms
    Maximum Output 23 volts, 8 amps
    Distortion (1KHz) 0.2% @ 30 watts, 8 ohms
    1% @ 60 watts, 4 ohms
    1% @ 60 watts, 2 ohms
    Input Impedance 23 Kohm
    Damping factor 100
    Crosstalk > -80 dB 20-20 KHz

    That should comfortably explain the internals, which are by the way the cleanest layout I've ever witnessed. This amp is built like a battleship; super solid and massively heavy, but unusually for a Class-A it's 'comparatively' cool to the touch (i.e. it won't burn your hand), even in the exceptionally hot weather we're currently experiencing. There is a very, very slight hum when powered on, but you'll barely notice it unless you put your head next to it. There's a slight dink on the very rear-most right hand heatsink, but I never noticed it until I photographed it today, and it can't be seen from the front at all.

    Paired with my Edingdales and Double Gem subwoofer, I can only describe the sound as sublime, musical, weighty, musical, crisp, musical, detailed, musical, smooth, musical and transparent; but with weight and authority, grip and musicality of course.

    Think that 30w won't be enough? Wrong! Unless you have the world's most insensitive speakers, and your Hi-Fi goal is to damage your ceiling, this 30w power house will literally bring down the house. I love it! It's a beautiful thing to listen through, and its minimalistic front panel belies what lives beneath.

    For this work of audio art, I'm asking now £650. It's a heavy beast so it'll cost a fortune to post, much cheaper if I deliver it to you for a bit of fuel cash. We can have a play too. Alternatively you may collect from me in Norwich. I have a mahoosive box to carry this in too.

    As I have suddenly found out the move is happening a bit quicker than expected, I'm happy to listen to offers on this. If you want to break payments then I can do that too.

    Click for large images























  2. #2
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    Any offers? Getting boxed up and stored this weekend if no takers.

  3. #3
    Join Date: Jan 2009

    Location: Outside Cambridge

    Posts: 11

    Default

    If only I had the funds.
    Where are you?
    Sorry, just seen it.

  4. #4
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    You're not far from me at all.

    PM me if you're interested and we can have a chat.

    Ben Duncan mains conditioner
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    Samsung QE75Q90T 75" QLED TV
    XMOS DSD Async USB to Coax converter
    RME Audio ADI-2 FS (AK4493) DAC
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect
    Edifier S3000 Pro active speakers
    Atacama SE24 stands

  5. #5
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    Want to get this amp moved on, so price drop to £650.

    Ben Duncan mains conditioner
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    Samsung QE75Q90T 75" QLED TV
    XMOS DSD Async USB to Coax converter
    RME Audio ADI-2 FS (AK4493) DAC
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect
    Edifier S3000 Pro active speakers
    Atacama SE24 stands

  6. #6
    Join Date: May 2016

    Location: Milton Keynes

    Posts: 3,577
    I'm Andrew.

    Default

    I’m loving having this Class A beast of an amp .
    Thanks Rob


    Sent from my iPhone using Tapatalk

  7. #7
    Join Date: Jan 2008

    Location: Norfolk, UK

    Posts: 6,209
    I'm BigBobJoylove.

    Default

    Excellent!

    It's a work of art that isn't it!

    Ben Duncan mains conditioner
    2022 MacBook Pro 14" M1 Pro 10/16/16/16
    Samsung QE75Q90T 75" QLED TV
    XMOS DSD Async USB to Coax converter
    RME Audio ADI-2 FS (AK4493) DAC
    Chord Clearway XLR interconnects
    Audioquest Crimson USB interconnect
    QED Quartz Reference optical interconnect
    Edifier S3000 Pro active speakers
    Atacama SE24 stands

  8. #8
    Join Date: Jan 2008

    Location: Norwich

    Posts: 1,064
    I'm Mike.

    Default

    I was sorely tempted as I'm in Norwich but not sure about replacing my EAR 509s and compatibility with my big Quads but that big beast was very attractive. Glad it's sold.....in a way.

  9. #9
    Join Date: Jun 2015

    Location: London/Durham

    Posts: 6,869
    I'm Lawrence.

    Default

    We're on holiday in Norfolk and I was tempted too!

  10. #10
    Join Date: Aug 2012

    Location: Eton wick

    Posts: 1,677
    I'm Philip.

    Default

    Curious.
    What sort of sound do these produce?

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