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OVERVIEW

Released in 2007 -  this phono stage replaced our well respected ZP2.0.  It features a passive RIAA with tube rectification and tube voltage regulation.  It uses 12AX7 tubes for the RIAA stages and a 12AU7 for the output buffer stage. It has 42dB of gain with a 47K input impedance.  It is a maintenance free design, easy on tubes, noise and hum free and perhaps most importantly it sounds unbelievably good.  If you know anything about the ZP2.0, you would know it was 6 years in the making with the most R&D we've ever invested in a single product.  The ZP3 is better. 

Our feeling regarding Vinyl playback is simply that the sound should destroy digital playback - so to that effect this is a flagship product.  No cheaper models, no further improvements either.  It represents our best effort to take your vinyl to the bodacious lively and dynamic 3D experience it was always meant to be.  We compared many high dollar phono stages with the ZP3 during it's development, some in the 5 figure price range.  Most of them sounded like a really really good DAC.  Sorry, but if we wanted it to sound like a really great DAC we'd just sell you a really great DAC.  A phono stage is the make it or break link in your LP playback.  It is by far more responsible for the enjoyment of the playback than the cartridge.

FOR MOVING COIL CARTRIDGES

We believe the best way to step up a MC cartridge is with a wide bandwidth transformer, and we offer your choice of 3 different types.  This is done in a separate black metal chassis.  You can purchase this separately by selecting the one that best matches your cartridge, or call us and we'll recommend the best match.

ZMC1

 For low gain MC cartridges

1:20 ratio for use with 3~25 ohm cartridges.

ZMC2

 For high gain MC cartridges

1:10 ratio for use with 3~100 ohm cartridges.

ZMC3

 For high impedance MC cartridges

1:12 ratio for use with 25~100 ohm cartridges.


All three models feature adjustable cartridge loading via the gold knob on the front of the unit so that you can dial your cartridge in as you listen to it!

The ZMC's feature Sowter of England step up transformers made from Mumetal (76%Nickel) laminated core for minimal harmonic distortion and exceptional bandwidth. 4 separate electrostatic screens for rejection of hum and noise in the cable connecting between the cartridge and transformer. Multiple interleaved windings ensuring exceptionally good bandwidth. The high bandwidth and very low phase shift ensures excellent transient response. Mumetal can for magnetic shielding is standard.

Typical response is 10Hz ~ 100kHz.

* YOU WILL HAVE THE OPTION to add a ZMC1, ZMC2 or ZMC3 when you
   purchase the ZP3 phone stage.  Since it uses European Transformers,
   you'll have to check the shopping cart for the current price.



ZP3 FEATURES

Single Ended Triode Class A1 operation with a tube rectified high current power supply that is five times bigger than required.  The liquidity of this design proves the best form of artifact free regulation is brute raw current - you can hear it. Add to that the tube regulated B+ and the ZP3 gives new definition to the phrase "grain free sound".

There is a standby switch allowing you to keep the unit warmed up all the time if you like.

ZERO maintenance, no adjustments, no biasing, long tube life are just some of what make this such a hassle free pleasure to own and listen to.

The wood chassis is completely foil lined for 100% shielding giving you hum free, noise free operation at all times.

And...

  • Single Ended Triode
  • Passive RIAA
  • No negative feedback
  • Tube voltage regulation
  • Tube rectification
  • Self Biasing
  • DC Heater supply
  • Custom transformers
  • World AC Compatible
  • Removable power cord
  • Standby Switch
  • High mass T6 chassis
  • +/- 1 dB RIAA 20~20kHz
  • High Reliability
  • Optional hardwoods
  • Reference fidelity
  • Lifetime warranty 


TUBES

The ZP3 comes with the high grade tube  The amp is self-biasing so no adjustments are needed for the life of the unit.  The signal tubes are 12AX7 and the buffer is a 12AU7 all supported by the 5U4 rectifier and OA3 voltage regulator tube.  All included.


WOODS

The ZP3 comes standard with your choice of black figured wood base shown in the picture at the top of this page or you can have a contemporary style base in natural walnut shown below. 

Custom bases can also be made in the style shown below from any hardwood including many exotics for an extra charge.  Custom bases are non-refundable.  The wood bases for the ZP3 are user interchangeable.  That means you can purchase a custom base at any time for your ZP3 and change it yourself !





SUPPORT

This amplifier is hand built in the USA by DECWARE / High Fidelity Engineering C0. It comes with a lifetime warranty to the original owner. If you purchase one second hand and ever have questions or technical problems we WILL be happy to check it out for you and service it if needed for a very reasonable rate.

We also have a support forum with many people who own this amplifier who's experiences you may benefit from. 


REVIEWS

You may read reviews on our products going back 10 years.


SPECIFICATIONS

This amplifier requires no adjustments or maintenance other than changing tubes every couple years.


Weight   13 lbs. ea.
Dimensions   8.5" H x 7.250" W x 14.75" D
Circuit type   Single ended Class A Triode Passive RIAA
Gain   + 42 dB
With optional

 

step up transformer + 61dB
Input   47 kOhm
Noise / Hum   Less   than 0.5 millivolts
Input Impedance

 

47 kOhms
Output Impedance

 

Less  then 1 kOhms
Response   15 Hz ~ 25 kHz
Feedback   ZERO negative feedback used
Rectification   5Y3GT tube rectification
Regulation

 

OA3 tube regulation for entire circuit
Signal tubes   12AX7, 12AU7
Transformers   Transformer custom made for this phono amplifier by Decware
Biasing   Self-Biasing circuit - never needs adjustment
Resistors   All resistors are audiophile grade
Signal Cap   Audiophile grade poly film/foil
Filter Caps   All filter caps   are premium quality
AC cord   Fused IEC connector provided with removable power cord
Consumption   65 watts at full power
Input jacks   RCA type 24K Gold / Teflon
Output jacks   RCA type 24K Gold / Teflon
Distortion

 

0.03% at 1 kHz
Warranty   Lifetime to original owner / 90 days on tubes


VOLTAGES

This amplifier comes standard with our World Voltage Compatible Transformer. Your ZP3 will be automatically wired for the correct voltage for your country and be supplied with the correct removable power cord.


DESIGN NOTES


The ZP3 Design Notes by Steve Deckert


OWNERS MANUAL

The owner manual for this amplifier can be viewed on line or printed:
ZP3 Owners manual.pdf

 

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