Price: $3995

 

 

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Featuring JFET operation the Phono Preamp is completely immune to the reactive nature of virtually all phono cartridges. By incorporating a circuit design that offers extremely high input impedance combined with low output impedance (50 ohms) the Phono Preamp matches the musicality of the best tube phono stages with a lower noise floor. With adequate gain for even the lowest output cartridges, the Phono Preamp also features user adjustable input impedance, capacitance and overall gain. Other advanced features include both balanced and single ended operation and gold plated circuit boards for the best in low noise and long life operability.

 

picture of the phone preamp straight ahead view

 

Its size and styling is identical to our "line stage" preamp, and it is built in the same anodized, machined aluminum chassis so you may stack the two and have a beautiful set.  The front panel of the phono preamp is similar to the line-stage preamp — it simply lacks the volume control knob and input switches.  It may be used with any line level preamp.

 

 Specifications

 

Frequency Response 

 0.2dB of RIAA with subsonic roll-off @ 14 Hz

Noise

  <87 dB referenced to 1 volt output

Distortion 

0.01% from 20 Hz to 20 KHz @ 3 volts peak into 600ê or      higher, shunted by 1000 pF or less.

Input Impedance 

  22ohms to 47kohm, user selectable

Output Impedance 

50 ohms non-reactive unbalanced, 150 ohms non-reactive balanced

Input Capacitance

50 pF to 1000 pF, user selectable

Gain 

unbalanced in and unbalanced out; 37 dB @ 1 kHz balanced in and unbalanced out; 37 dB @ 1kHz unbalanced in and balanced out; 46 dB @ 1kHz balanced in and balanced out; 46 dB @ 1kHz Note: An internal switch can increase gain by 20dB

Maximum Output 

10 volts peak

Crosstalk

70 dB @ 20 kHz

Power Supply 

Independently regulated with shielded toriodal transformer and 25,000 uF capacitance

Power Consumption

10 watts

Dimensions

17" wide, 1 3/4" tall, 9 3/4" deep

Weight 

6  pounds, shipping


 


 

 

picture of both the preamp and phone preamp stacked front view

picture of the inside of the phone preamp

Features

 

      ·  No expense or feature has been spared in the development of the phono preamp.

 

·  Features include user adjustable input impedance, input capacitance, and gain. It uses ultralow noise FETs in the gain stage so it is so quiet that it can be used with moving coil cartridges without the need for a "head amp" or matching transformer. FETs also offer very high input impedance (like tubes) so that there is minimal interaction with the phono cartridge. In addition to the expected balanced and single ended outputs, the unit even includes balanced inputs for those cartridges that require them.

 

      ·  Ultra-quiet JFET operation (much quieter than tube preamplifiers).

 

      ·  Amplifies low-output moving coil cartridges without a head amp or matching transformer.

 

     ·  Virtually perfect transconductance device with extremely high input impedance like tubes (10 megohms) but low output impedance (50 ohms). Therefore, is immune to the reactive nature of phono cartridges and has no impedance mismatch problems.

 

      ·  User-adjustable input impedance.

 

      ·  User-adjustable input capacitance.

 

      ·  User-adjustable overall gain to match both moving magnet and low-output, moving coil cartridges.

 

      ·  Both single-ended and balanced operation includes balanced phono cartridge input for superb noise-rejection.

 

      ·  Slim-line design can be stacked on top of another component instead of requiring its own shelf.

 

      ·  Styling designed to complement the Sanders Sound Systems line-stage preamplifier.

 

      ·  Finest construction and components including:

                     · Machined and anodized aluminum construction. 

                         · Gold plated circuit board.

                         · Shielded toroid transformer.

 

picture of the back of the phono preamp showing connections