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For Sale: Rockhopper Balanced Beta22 + Dual Sigma22 PSU

post #1 of 9
Thread Starter 
This Classified is Closed

For Sale:
Rockhopper Balanced Beta22 + Dual Sigma22 PSU

Will Ship To: Anywhere

For sale is my beloved Balanced AMB B22 headphone amplifier with Dual Sigma22 PSU made by Rockhopper Audio.

 

This is a piece of art, and probably one of the most beautiful gear I have ever owned. It is also the most transparent amplifier I have ever listened to, but I simply cannot afford to keep it.

 

It is fully balanced, features a Twisted Pear Joshua Tree attenuator, and has extensive switchable balanced and unbalanced inputs and outputs. It can be adapted to all mains voltage by a switch on the rear of the PSU case. It features black anodised enclosures with custom engraved front and back panels. Two military-grade umbilicals to connect the PSU to the amp are provided.

 

There are two very small blemishes on the corner of the PSU enclosure, which were caused by the shipment. Otherwise it is in excellent condition.

 

 

Here are the full specifications:

 

  • 2 X Sigma 22 power supplies in separate case
  • Balanced Beta 22 amp
  • Gain: 4x balanced, 2x single ended
  • Inputs: 2 X balanced XLR; 2 X RCA single ended
  • Outputs: 1 X XLR balanced headphone out; 1 X 1/4" single-ended headphone out; 1 X balanced active preamp out; 1 X RCA single-ended pre-amp out; 1 X balanced speaker out
  • Vishay Dale resistors used through
  • Silver coated, copper stranded wire used throughout
  • High quality power and attenuator power umbilicals
  • 100V-240V operation

 

 

 

**************

 

UPDATE!

6 months ago, I made some modifications to the internal layout to improve the performance even more. I added a relay input selector, stacked above the relay attenuator, which reduced considerably the input signal path, and improved the long-term reliability.

The amplifier is completeley silent, even with the most sensitive headphones.

I made measurements of the amplifier, which are state of the art.

 

The Beta22 has been my favorite amplifier ever since.

 

 

 

*****

 

You can find the original ad from Rockhopper Audio here:

http://www.rockhopperaudio.com/store/2009/12/19/sold-balanced-beta-22-with-the-works.html

 

The amp is located in EU (France), but I can ship anywhere in the world.


Edited by CafeNoir - 12/2/12 at 8:11am

Gear mentioned in this thread:

post #2 of 9

HI, I am interesting for this AMP.

How much will will it ship to Taiwan?

post #3 of 9
Thread Starter 

Hi hkimo!

You have a PM.

post #4 of 9
Thread Starter 

.


Edited by CafeNoir - 12/2/12 at 8:13am
post #5 of 9

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Edited by fortunate son - 5/25/12 at 8:08pm
post #6 of 9
Thread Starter 

Sorry everyone, after long listening sessions and comparison with other amplifiers, I finally came to the conclusion that this amplifier is simply the best and will not be replaced easily. My mind (and wallet) tell me to sell it, but my heart (and my ears!) urge me to keep it.

I might sell it again in the future if there is an absolute necessity, but for now this has to stay.

 

 

Cheers to all!

 

 

post #7 of 9
Thread Starter 

Back on sale.

post #8 of 9

You've got mail biggrin.gif

post #9 of 9

SOLD!!! biggrin.gif

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