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Jeff Rowlands: Synergy II iStereo Preamplifier - with Regulated AC Power Supply
www.jeffrowland.com



Overall Gain Adjustable for each input ± 20 dB relative to unity gain (0 dB) in 0.5 dB increments
Input Impedance Unbalanced
Balanced
Adjustable for each input
36k or 600 Ohms
36k or 600 Ohms
Output Impedance Unbalanced
Balanced

40 Ohms
80 Ohms
Maximum Input Level 13 volts RMS at 0 dB gain
Maximum Output Level 13 volts RMS at (24 dBM)
Output Noise Level 10 microvolts, 20 to 20 kHz bandwidth, 0 dB gain
Signal to Noise Ratio > 96 dB
Channel Separation > 100 dB, @ 20 to 20 kHz bandwidth
Frequency Response 5 Hz to 160 kHz, -3dB
Total Harmonic Distortion (THD) & noise
0.0012%, 10 volt output, 600 Ohm load
Gain Range
63.5 dB, 127 equal increments
Gain Resolution 0.5 dB ± 0.03 dB over entire range
Channel Balance
± 0.03 dB throughout entire range
Dimensions
17.5 in.W x 6 in.D x 3.15 in.
H 44.5cm W x 15.25cm D x 8cm H
Weight
 24 lbs. (11 kg)
FEATURES:
- Five balanced XLR inputs per channel. Balanced XLR main and record outputs. One balanced XLR “bypass” input per channel for use in home theater installations.

- All inputs and outputs can be used with single-ended RCA terminated interconnects by using XLR / RCA adapters (one male stereo pair and one female stereo pair supplied).

- Independent Listen and Record functions on each input permit simultaneous listening and recording from any two selected inputs.

- Each input can be individually adjusted for R/L balance, mono/stereo, absolute phase, input impedance and gain, exclusively independent of every other input. Individually adjusted input settings are automatically memorized and recalled when returning to that input.

- Six function hand-held IR remote control with IR receiver / volume display unit located in companion power supply for volume level indication.

- All operational functions under microprocessor control. Within five milliseconds of any function selected, the microprocessor reverts to a non-clocking “sleep” mode which eliminates any possibility of digital noise contamination.

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