Description
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
Weight
Net Weight: 8 pounds (3.6 KG)
Shipping Weight: 13 pounds (5.9 KG)
Dimensions
17" wide x 2.5" tall x 10.5" deep (43cm x 6.35cm x 27cm)
dagogo.com by Phillip Holmes
"The Sanders Preamplifier is rather unassuming. It doesn’t have a separate power supply chassis or fancy knobs. The finish is good, but not flashy. The price is downright “cheap” compared to many competing products. When sitting next to one of Sanders’ big amps, it may look like an afterthought, but you would be wrong. Roger, the engineer, made the unit big enough to get the job done, but no bigger. Fancy enough to match the other electronics, but no fancier. This is a preamp, not a status symbol.
Considering the price and performance, I doubt you’ll find anything better without spending significantly more. Considering you can leave it on all the time, and it comes with a lifetime warranty, it’s an easy recommendation."
Hand crafted in Conifer, Colorado.
Roger Sanders has been at this for 40 years. His first published article on Electrostatic Speakers was in 1974, followed by another on amplifiers to drive ESL's in 1976.
His contribution to audio include the invention of the curved, free-standing, electrostatic loudspeaker driver; the development of extremely compact transmission line woofer systems; integration of electrostatic speakers and transmission line woofer systems; and, several "how to" construction articles in "The Audio Amateur" and "Speaker Builder" magazines. Throughout all this time, he has been perfecting the hybrid electrostatic loudspeaker, as well as designing amplifiers to effortlessly drive them to maximum effect.
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