VK-P12SE 
Phonostage
Silver
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VK-P12SE
 
NEW ENGINEERING ENHANCEMENTS INCREASE SONIC PEDIGREE

A Special Edition version of BAT’s new VK-P12 phonostage, VK-P12SE includes numerous engineering improvements to offer greater information retrieval and supreme musical presentation. The first gain stage is completely revised to provide a substantially lower noise floor. In addition to the transformer-coupled output transformers, a reconfigured output stage incorporates four high-gain 6C45 tubes. They provide high-current and low-output impedance, establishing superb drive and crystalline transparency. These enhancements result in a phonostage with improved silence in the quietest musical passages, unfettered dynamic ease, and a grand sense of scale. For listeners that may want even more performance, VK-P12SE is fully upgradeable to the VK-P12SE SuperPak.

A Special Edition version of BAT’s new VK-P12 phonostage, VK-P12SE includes numerous engineering improvements to offer greater information retrieval and supreme musical presentation. The first gain stage is completely revised to provide a substantially lower noise floor. In addition to the transformer-coupled output transformers, a reconfigured output stage incorporates four high-gain 6C45 tubes. They provide high-current and low-output impedance, establishing superb drive and crystalline transparency.

Balanced Architecture

The VK-P12SE is fully balanced from input to output.  For the best possible performance, the phono cartridge should be used in a matching balanced configuration. Many turntables and tonearms allow for such a termination. In some cases, even if only RCA connectors are present on the arm, the cartridge can still be used in a balanced configuration by using a specially designed cable. 

Ten-Tube, Transformer-Coupled, Zero-Feedback Design

The VK-P12SE features an all-tube zero-feedback design that combines the benefits of balanced operation with complementary vacuum-tube current sources. Dual-mono construction and enormous energy reserves are matched by extensive flexibility in cartridge loading. The first gain stage achieves a very low noise floor by using premium Vishay Bulk FoilTM resistors that replace metal film resistors in critical circuit areas. The output stage employs four powerful high-current 6C45 vacuum tubes for improved gain and better drive capability. Like the elite VK-33SE, VK-53SE, and REX II preamplifiers, the VK-P12SE features a transformer-coupled output stage. This new design replaces BAT’s venerable Six-Pak of output capacitors with custom-designed output transformers. The new transformer-coupled output stage proves substantially superior to any capacitor in maintaining a purity of signal transmission.

Flying RIAA Network

Among the benefits of the VK-P12SE’s differential RIAA network are ease of adjustment and improved common mode noise rejection.  This circuit is also completely passive and has fewer components than a more traditional implementation. The ease of factory adjustment translates into improved matching of the RIAA curve to specification, with an RIAA error typically not exceeding 0.1dB!  With the BAT Flying RIAA network, you can be assured that all of your records sound the way that the recording engineer intended.

Vacuum-Tube Current Sources

Vacuum-tube current sources further improve the linearity of any gain stage to yield a more open and textured sound than a simple resistor-based solution. In the VK-P12SE, dual 6SN7 vacuum tubes act as current sources for the second gain stage. They complement the inherent strength of vinyl playback in that the finest texture and harmonic structure of musical instruments are portrayed with greater delicacy.

Selectable Step-up Transformers

The VK-P12SE features second-generation step-up transformers that provide as much as a 20db improvement in signal-to-noise ratio in comparison to direct mode operation. This allows the customer to successfully use even the lowest output moving-coil cartridges. With up to 80dB of gain available, no signal is too small!

Summary

Why did we build a Special Edition of our highly regarded VK-P12 phonostage?  To create a phonostage that offers even greater ability to retrieve the finest musical detail from your record collection. The engineering execution simply conveys the manner in which we accomplished this goal. We hope you can audition the VK-P12SE in your own system to understand why it is indeed something special. Of course, all VK-P12SE phono stages can be further upgraded to VK-P12SE SuperPak status, maintaining the commitment to a rational upgrade path that has earned BAT tremendous customer loyalty.

A "TRANSFORMATIONAL" TRANSFORMER-COUPLED OUTPUT STAGE

Like the elite VK-33SE, VK-53SE, and REX II preamplifiers, the VK-P12SE SuperPak features a transformer-coupled output stage. This new design replaces BAT’s venerable Six-Pak of output capacitors with custom-designed output transformers. In order to achieve this “transformational” goal, years were spent prototyping and testing various alternative output transformer designs.  All the work paid off: BAT’s new transformer-coupled output stage proves substantially superior to any capacitor in maintaining a purity of signal transmission.  Electrically, these output transformers significantly improve the performance in every measured respect. Sonically, they offer improvements in every area of musical reproduction.

CLEARER TRANSPARENCY, VISCERAL BASS, THREE-DIMENSIONAL TEXTURE

With the VK-P12SE, you get an all-tube zero-feedback design that combines the benefits of balanced operation with complementary vacuum-tube current sources. Dual-mono construction and enormous energy reserves are matched by extensive flexibility in cartridge loading. The first gain stage achieves a very low noise floor via premium Vishay Bulk Foil resistors that replace metal film resistors in critical areas. An upgraded power supply joins the new transformer-coupled output stage in contributing to greater transparency and a more responsive, visceral bass. Vacuum-tube current sources further improve the linearity and yield a more open, textured sound. A differential RIAA network ensures all your records will sound the way the recording engineer intended, permitting ease of adjustment and improved common mode noise rejection. Plus, the VK-P12SE’s second-generation step-up transformers provide as much as a 20db improvement in signal-to-noise ratio in comparison to direct mode operation. With up to 80dB of gain available, no signal is too small. Analog bliss awaits.

VK-P12SE
Phonostage
Output: Transformer coupled
Inputs: 1x RCA + 1x XLR Weight: 40 lb. (19kg)
Outputs: 1x XLR    
Gain at 1kHz:   Signal to noise ratio:  
Direct - Low 45dB Direct - low 73dB
Direct - High 60dB Direct - high 76dB
Step-up low 65dB Step-up low 86dB
Step-up high 80dB Step-up high 93dB
       
Cartridge loading:   Absolute Polarity: Switchable
Resistance(ohms) Selectable from 100 to 47k Tube Compliment: 4x 6922
4x 6C45
2x 6SN7
Capacitance (pf) Selectable from 0 to 1000 Power supply energy storage: 200 joules
       
Power consumption: 150 VA Dimensions: 19"x5.75"x15.5"
(48 cm x 15 cm x 40 cm)