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The Zen Cartridge Amplifier

Battery operated tube stage

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Model ZCA

PHONO CARTRIDGE AMPLIFIER

This device was originally conceived for low-output Moving Magnet cartridges to increase the output level of the cartridge.    You may also use it with your favorite Moving Coil cartridge and step up transformer combo by adding it to the output of the transformer.

Normally if you needed to increase the output level of a cartridge you would do it with a transformer, which works well and sounds great.  However when we got involved with London Decca phono cartridges we decided that we wanted something more transparent than a transformer and ideally something that would be adjustable so that we could level match the various cartridges without altering the gain structure of the playback system.

We have found this to be a serious game changer with lower output cartridges, as expected, but were pleased to find out that even higher-output cartridges sound better with it.  In fact so far we can say that all cartridges could benefit from it.

What you hear is the cartridge open up, become more alive, more present, pick up a huge dose of density and dynamics.  Interestingly these are the same descriptors used by those with high dollar cartridges to differentiate why they cost more.  

Being able to adjust it while you listen and get it just right for you is where the magic is.  The tube used is a dual triode called a 6GM8, which has a 6.3 volt heater powered by four D-Cell batteries and the miracle of this tube is that it only needs 9 volts to operate which is easily accomplished with a single 9 volt battery.

 

There is a voltage meter so that you can monitor battery life, and an on/off switch to help you preserve battery life when you're not listening to it.  Additionally you will find that different battery types affect the sound.  Carbon batteries sound a touch different than Alkaline, and can be used as a tool for additional cartridge voicing.

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SPECIFICATIONS

 

Weight - 7 lbs. ea.

Dimensions - 2.5" H x 6" W x 11.0" D

Circuit type - Single ended Class A Triode

Power Supply - Battery 4 - D Cell. 1 - 9V

Gain - 0 ~ 12dB

Max Input voltage - 10 mV

Output Impedance < 6000 ohms

Input Impedance - 47,000 ohms

THD - 5mV = 0.5%

Response - 20 Hz ~ 20 kHz

Feedback - ZERO negative feedback used

Noise - 80dB

Signal tube - 6GM8 / ECC86

Biasing - Cathode Bias

Resistors - DALE, VISHAY

Input jacks - RCA type 24K Gold / Teflon

Output jacks - RCA type 24K Gold / Teflon

Warranty - Lifetime to original owner

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SUPPORT

This product is hand built in the USA by DECWARE / High Fidelity Engineering Co. It comes with a lifetime warranty to the original owner. If you purchase one second hand and ever have questions or technical problems we are happy to check it out for you and service it if needed for a very reasonable rate.

MODEL ZCA

SINGLE ENDED TRIODE PHONO CARTRIDGE AMPLIFIER

Made by hand in the USA and sold wholesale to the public with a 
L i f e t i m e   W a r r a n t y  !

No product

ZCA are hand-built to order.  There are presently lots of orders on our real time build sheet.   A 10% deposit secures your place on the list with today's date and time stamp.  Balance is due when it's ready to ship. You will be sent a final invoice with the total price including actual shipping costs by our office during your wait.  NOTE: This item is built on our accelerated build sheet that has shorter wait times.

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DECWARE is a trademark of High Fidelity Engineering Co.

75 S. Riverview Dr. East Peoria IL 61611 (309) 822 5255
Webpage Designed & Copyright © 1996 ~202
5 by Steve Deckert

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