Valve Amplification CompanySignature Mk2a SEusedValve Amplification Company Signature Mk2a SE VAC Preamplifier with phono stageThe Signature Mk2a Special Edition (SE) is one of the highest rated preamplifiers on the market today. It is a fully balanced design with no coupling capacitors and features a hand-wired circuit. T...10775.00

Valve Amplification Company Signature Mk2a SE VAC Preamplifier with phono stage [Expired]


no longer for sale

The Signature Mk2a Special Edition (SE) is one of the highest rated preamplifiers on the market today. It is a fully balanced design with no coupling capacitors and features a hand-wired circuit. There is no loop feedback so the output is stable and free from dynamic interactions with the load. This unit has the optional gold knobs and MC/MM phono stage. The preamp has five single-ended line inputs two of which include balanced XLR inputs, as well as a fully balanced Cinema Bypass input. There are two outputs that can be used in either single-ended or balanced mode. The audio circuit is pure Class-A triode, with zero feedback. The tube complement includes two 6DJ8/6922s in the line stage and six 12AX7s in the phono stage. The line stage can use a variety of tube types (8416, 7308, 6922, E88CC, ECC88, 6DJ8, 7DJ8, or 12DJ8 twin triodes) for those who like to tube roll.

 

The phono stage is sensitive (44 dB MM, 64 dB MC), quiet, and is fully compatible with low-output, moving coil cartridges. Gain is adjustable, as is resistive loading. A separate power transformer is used, eliminating any disturbance of the delicate phono signal by the powerful line stage. The external power supply feeds the line and phono stages separately to keep the two stages electronically isolated.

 

This Signature Mk2 was manufactured at the end of 2012 and was returned to the factory last year for full upgrade to the current Signature Mk2a SE (Special Edition). The upgrade primarily replaces the input transformers to the premium designs used in the Statement and Master ranges.

 

The preamp will come with two tubesets including 6DJ8 and 12AX7 tubes that were installed by the factory at the time of the upgrade. I am also including a full set of Genalex/Gold Lion E88CC/6922 (line stage) and ECC83/12AX7 (phono stage) that were recommended by VAC as upgrades over the stock tubes. These Genalex current production reissue tubes were purchased from Upscale Audio and are platinum graded and cryogenically treated, retailing at $464 for the set. The unit also comes with its remote, a 12-gauge power cord, and its original box and manual.

 

My reason for selling is that I recently upgraded with the purchase of the VAC Master Preamplifier and Signature 200 iQ amplifier (see photos). Although the Master does improve on the Signature preamp, the differences are subtle and truly represent the law of diminishing returns. At less than 1/3 the cost, this Signature Mk2a SE provides 95%, and maybe more, of the Master’s performance.

 

Paypal is the preferred method of payment and I will cover the fees.  Unfortunately due to my recent experiences with forged bank checks from A’gon buyers, payment by check or money order will delay shipment until check clears the bank clearinghouse (10 working days)- sorry.

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