VK-P12SE SuperPak 
Phonostage
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VK-P12SE SuperPak
 
THE LARGEST-VALUE OIL CAPACITORS IN ANY BAT COMPONENT

Reaching dramatic new performance levels while pristinely preserving the delicate signals generated by modern cartridges, the VK-P12SE SuperPak represents a new reference for phonostages. Building on knowledge gained during the design of BAT’s groundbreaking REX amplification products, the second-generation SuperPak yields a far more open sound, with a more coherent portrayal of musical texture from the lowest to the highest frequencies—and an astonishingly vibrant, three-dimensional soundstage. The SuperPak replaces electrolytic capacitors in the most critical first two gain stages with the largest-value oil capacitors ever employed in a BAT design. Boasting state-of-the-art engineering achievements, individual technical advancements, and awe-inspiring synergy, VK-P12SE SuperPak pays priceless dividends on your investment in vinyl.

Reaching dramatic new performance levels while pristinely preserving the delicate signals generated by modern cartridges, the VK-P12SE SuperPak represents a new reference for phonostages. Building on knowledge gained during the design of BAT’s groundbreaking REX amplification products, the transformer-coupled output stage and second-generation SuperPak yield a far more open sound, with a more coherent portrayal of musical texture from the lowest to the highest frequencies—and an astonishingly vibrant, three-dimensional soundstage

Balanced Architecture

The VK-P12SE SuperPak 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 SuperPak 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 SuperPak features a transformer-coupled output stage. This new design replaces BAT’s venerable Six-Pak of output capacitors with custom-designed output transformers. This 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 SuperPak, 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 SuperPak 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! 

Second-Generation SuperPak

Knowledge gained during the design of the groundbreaking REX Series of amplification products bore fruit for the second-generation Super-Pak. It replaces all electrolytic capacitors in the most critical first two gain stages with the largest-value oil capacitors ever employed in a BAT design, yielding improvements beyond those that can be achieved by using oil caps for power supply bypass alone.  This second-generation SuperPak yields a far more open sound, with a more coherent portrayal of musical texture from the lowest to the highest frequencies—as well as an astonishingly vibrant, three-dimensional soundstage.

Summary

The VK-P12SE, with its second-generation SuperPak and transformer-coupled output stage, unlocks hidden performance in virtually any phono cartridge. The whole of its engineering achievement is greater than the sum of its individual technical advances. Such synergy will pay undreamed of dividends in your investment in vinyl. As a reminder, all VK-P12SE phonostages can be upgraded to the VK-P12SE SuperPak status, maintaining the commitment to a rational upgrade path that has earned BAT tremendous customer loyalty.

YEARS IN THE MAKING: 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 VK-P12SE’s performance in every measured respect. Sonically, they offer improvements in every area of musical reproduction.

MATCHLESS ENGINEERING, UNRIVALED PARTS QUALITY, NONPAREIL OPERATION

The heart of the VK-P12SE SuperPak is 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. An upgraded power supply contributes to more responsive, visceral bass.  Vacuum-tube current sources further improve the linearity and yield a more open, textured sound. Dual 6SN7 vacuum tubes act as current sources for the second gain stage. 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, 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. All you have to do is listen.

VK-P12SE SuperPak
Phonostage
Output: Transformer coupled
Inputs: 1x RCA + 1x XLR Weight: 43 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 Complement: 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)