Criterion Preamplifier

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On very rare occasions, one person's vision encompassing a life's experience and creativity will merge and come to fruition in a work of art unequalled among peers. Jeff Rowland proudly presents his Criterion Preamplifer.

The Criterion incorporates the most tried and proven concepts trailblazed by JRDG over the 25+ years of successfully developing the finest audio products available: battery power that provides the cleanest possible power source and isolation from the power grid, balanced circuitry, transformer coupling and much more. Additionally new ideas resulting in the further elimination of haze-inducing vibration are included in this no-holds-barred design.

Additional details are forthcoming, but words alone cannot adequately describe the sonic excellence of this unique product. It must be heard to comprehend this outstanding achievement.

Specs

Overall Gain

Independently Programmable 0 to 20 dB on each input

Gain Range

99.5 dB, 199 Equal Increments

Gain Resolution

0.5 dB, +/- 0.03 dB Over Entire Range

Frequency Response

10 Hz – 300 kHz, -3 dB @ 8 ohms

Maximum Input Level

13.5 volts (RMS) @ 0 dB Gain

Maximum Output Level

THD + Noise

< .003% @ 2 volt (RMS) Output, 50 Hz – 20 kHz

Signal-to-Noise Ratio

> 100 dB

Common Mode Rejection Ratio

> 90 dB, 20 Hz – 20 kHz

Channel Separation

99.5 dB

Input Impedance

40k ohms Balanced or Unbalanced

Output Impedance

60 ohms Balanced or Unbalanced

Inputs

4 pair Balanced (XLR), 2 pair Unbalanced (RCA)

Outputs

2 pair Balanced (XLR), 2 pair Unbalanced (RCA) for Main Out
1 pair Balanced (XLR), 1 pair Unbalanced (RCA) for Record Out

Power Consumption

Min – 15 watts, Max – 50 watts
Depending on Battery Recharge Rate

Power Supply

Universal Voltage Input Power Supply with
Selectable Off-line NiMh Battery Power Supply and Charger

Display

320 x 32 dot Vacuum Fluorescent Display (VFD)

Preamplifier Weight

46 lbs. / 21 kg

Overall Preamplifier Dimensions (H) x (W) x (D)

6.4” x 15.5” x 12.3” (162mm x 394mm x 311mm)

Because Jeff Rowland Design Group is constantly analyzing new design improvements, we reserve the right to change or modify product specifications without notice or obligation.