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For Sale: JMT built amps - META42 and CHA47 (CHA-47 has been sold!)

post #1 of 9
Thread Starter 
$185 (USD) or Best Offer
send a PM to take the next step.

For Sale:
JMT built amps - META42 and CHA47 (CHA-47 has been sold!)

Will Ship To: Continental USA

For sale are two amps made for me by JMT; Jon made them both for me back in 2003 and both are in great shape and work perfectly.

 

The META42 has the following specs:

 

Multi-loop/META 42 amp
. Hammond anodized aluminum case (black or brushed aluminum, your choice)
. Hand matched Vishay/Dale RN55D metal film resistors
. Alps Blue Velvet 100K ohm potentiometer (volume control)
. Elna Cerafine 47OμF/25v power supply caps
. WIMA 6.8 μF/50v reservoir caps
. Cascode current source to bias the op-amp to Class A
. Gold plated RCA input jacks
. ADB43KN op-amps
. Modified Linkwitz crossfeed (crossfeed is a circuit that allows a bit of cross channel, emulating how your ears
hear speakers)
. Rocker onloff switch
. Blue power LED
. Neutrik I/4" locking headphone jack

 

Jon did not sell a power supply/wall wart with the amp, leaving that up to the end-user.  I purchased an Elpac WM1818/1-760 power supply from Newark Electronics for the amp.  The amp itself cost $295 and the power supply was $44.16.  My asking price is $150.00 plus shipping.

 

***Sold****The CHA47 amp is a portable amp, a Cmoy amp with op-amps paralleled to deliver more current; it is ideal for low impedence headphones.  Though Jon usually built this amp in an Altoid or Penguin mint tin, I prefer chocolate to mints so he built mine in a Whitman's Sampler tin.  The op amps used are the Burr-Brown OPA2134PA op amps.  The amp has a power on LED and uses a 9-Volt battery.  I purchased it for $70.  My asking price is $35 plus shipping.

 

I prefer PayPal for payment; if a credit card is used than the buyer must pay the fees.

 

Please send me a PM if you are interested and thank you very much for looking.

 

Holly

 


Edited by OakIris - 9/27/11 at 7:04am
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post #2 of 9
Thread Starter 

These are really nice amps - you know you want one (or both) of them!  biggrin.gif

 

Prices reduced....

 

Holly

post #3 of 9
Thread Starter 

Bump for another price drop.  Sigh/  smily_headphones1.gif

 

Holly

post #4 of 9

 Is the META42 dual voltage, would it work in Dubai at 220v?

post #5 of 9
Thread Starter 

I am afraid that the amp does not have a switch to convert from 120v to 220v.  frown.gif  A step up transformer of some sort might work....not something that I have any expertise on though...

 

 

Holly

post #6 of 9
Thread Starter 

Sale pending for the CHA-47 amp.  smily_headphones1.gif

 

Holly

post #7 of 9
Thread Starter 

The Whitman tin CHA-47 amp has been sold.  biggrin.gif

 

Holly

post #8 of 9

Holly,

 

Been trying to reach you via PM to discuss the purchase of the META but I'm being blocked (I keep getting a message saying I've hit my limit for the day - when I haven't sent any LOL!).

I can try again later today or tomorrow.

 

Best

 

Art

SUBMIT

post #9 of 9
Thread Starter 

Hi Art - just sent you a PM; hopefully you can receive them even if head-fi is preventing you from sending them!

 

Holly

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