Sanders Preamp

Sanders Preamp 2017-07-07T14:19:59+00:00

The goal of a true audiophile grade preamplifier is to offer gain, switching, and other conveniences, while at the same time passing the original signal downstream without adding distortion, noise, or a sonic signature of its own.  The Sanders Preamp does exactly that but includes many ergonomic features for convenience and ease of use that are not available on even far more expensive preamps.

The levels of each individual input can be adjusted to get them all matched so that you don’t get “blasted” or have to turn up the main level each time you switch sources.  A stereo/mono switch remains standard equipment.  The overall gain, individual gain between devices, and channel balance can be adjusted in precise, 1dB increments.  Muting by remote control is standard.  A video readout makes it easy to monitor the levels.

The phono preamp offers exceptional flexibility and features, including virtually all the features of the most expensive, dedicated phono preamps.  These include switchable gain for both moving magnet and moving coil cartridges, and user-adjustable cartridge loading for both resistance and capacitance so that users can match their cartridge manufacturer’s specifications for optimum performance.  The phono circuit has the benefit of extremely low distortion and an ultra-quiet noise floor.


INPUTS Five unbalanced inputs at line level using RCA connectors.
One balanced input using XLR connectors.
One unbalanced, RCA phono input with switchable gain, adjustable input loading, and RIAA equalization.
One unbalanced video processor input with fixed level at unity gain for “pass-through” use.
OUTPUT Two pair of adjustable, unbalanced, outputs at line level using RCA connectors
One pair of adjustable, balanced, outputs using XLR connectors (Pin 2 “hot”)
One unbalanced, fixed level output at unity gain for recording using RCA connectors
All outputs may be used simultaneously
Frequency Response -3 dB at 5 Hz and 200 kHz
Noise Greater than 100 dB below 1 volt reference
Distortion Less than 0.002% from 10 Hz to 40 KHz @ 5 volts peak into  600 ohms or higher, shunted by 1,000 pF or less
Output Impedance 50 ohms, non-reactive, balanced or single-ended
Phono Input Impedance User adjustable between 47,000 and 100 ohms.  Default  setting is 47,000 ohms
Phono Input Capacitance User adjustable between 50 pf and 1,200 pF.  Default setting is 50 pF.
Input Impedance 47 kohms, balanced or single-ended
Gain User adjustable up to 18 dB. Default setting is +8 dB
Maximum Output 10 volts peak
Crosstalk Greater than 70 dB from 20 Hz to 20 KHz
Power Supply Independently regulated with shielded toroidal transformer and 20,000 uF of capacitance
Power Consumption 10 watts
Voltage Voltage is user selectable for use world-wide.
Dimensions Height:  2.5″ (6.35 cm)
Width:   17″   (44 cm)
Depth:   10.5″ (27 cm)
Weight Net Weight:  8 pounds (3.6 kg)
Shipping Weight:  13 pounds  (5.9 kg)