VK-P12 
Phonostage
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VK-P12
 
THE FOREFRONT OF ANALOG PLAYBACK TECHNOLOGY

Dual-mono construction, balanced inputs, vacuum-tube current sources, enormous energy reserves, and a massive power supply push the VK-P12 to the forefront of the world’s finest phonostages. Complementing the unit’s all-tube zero-feedback design, a unique Flying RIAA circuit maximizes accuracy, brings the benefits of fully differential operation to the critical equalization stage, and delivers standard-bearing fidelity to the original recorded signal. The end result is a circuit that unlocks hidden performance in virtually any cartridge.

Dual-mono construction, balanced inputs, vacuum-tube current sources, enormous energy reserves, and a massive power supply push the VK-P12 to the forefront of the world’s finest phonostages. VK-P12 uses the same amorphous core output transformers employed throughout Balanced Audio Technology’s premier line of phonostages Complementing the unit’s all-tube zero-feedback design, a unique Flying RIAA circuit maximizes accuracy, brings the benefits of fully differential operation to the critical equalization stage, and delivers standard-bearing fidelity to the original recorded signal.

Balanced Architecture

The VK-P12 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, Zero-Feedback Design

The VK-P12 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. Equipped with a new aluminum top cover, this incredible music instrument boasts high-quality input step-up transformers for greater flexibility in handling the lowest-output moving-coil cartridges as well as a Six-Pak of custom oil-filled capacitors in the output stage.

Flying RIAA Network

Among the benefits of the VK-P12’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

The whole of the engineering of the VK-P12 is greater than the sum of its parts. Such synergy will pay countless dividends on your investment in vinyl.  And, of course, all VK-P12 phonostages can be further upgraded to VK-P12SE or VK-P12SE SuperPak status, maintaining the commitment to a rational upgrade path that has earned BAT tremendous customer loyalty.

BUILT-IN STEP-UP TRANSFORMERS, MAMMOTH ENERGY RESERVES HANDLE ANY CARTRIDGE

Low-output moving-coil cartridges are a forte of VK-P12. Most are easily handled easily by the phonostage’s direct mode. High-quality, built-in step-up transformers can be either used for cartridges with even lower output or to obtain an even lower noise flow. Internal switches allow you to adjust cartridge loading for capacitance and resistance, and provide low and high settings for preamplifier gain. Signal polarity is effortlessly changed via a front-panel balanced phase reversal switch. And you’ll never worry about energy. The VK-P12’s energy reserves exponentially exceed those found in competing products. By most any measure, this phonostage could be a sizeable power amplifier. Want more? Per BAT tradition, VK-P12 is fully upgradeable to the SE and SuperPak versions.

SUPERLATIVE BUILD QUALITY, BREATHTAKING PERFORMANCE

True to BAT tradition, VK-P12 is built to a spec that ensures it will be passed onto future generations. Custom oil-filled signal capacitors are used throughout. Power-supply regulation is handled through vacuum-tube constant current sources. Pure, un-plated copper is utilized for all circuit board traces. Of course, all the effort spent on design and construction would be for naught if the VK-P12 yielded anything less than a breathtaking transcription of the music on your vinyl. And it’s in the LP grooves where the VK-P12 establishes its true pedigree. Experience it, and unlock the glory of vinyl music reproduction that few music lovers have ever imagined let alone enjoyed.

VK-P12
Phonostage
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: 8x 6922
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)