Jeff Rowland Criterion Preamp
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If amplifiers serve as the muscular, beating hearts of modern audio systems then the preamplifier certainly serves as its central nervous system.
Channeling information to and from diverse components, the preamplifier plays a pivotal role in determining the overall coherency and musicality of any great audio experience. Jeff Rowland Design Group’s well-earned reputation for superlative preamp design is supported by a history of peerless innovation that has produced some of the most enduring benchmarks in audio artistry.
The “Consummate,” “Coherence,” and, now, the matchless “Criterion” are revered names that have helped establish Jeff Rowland Design Group’s unrivaled and uninterrupted legacy of preamp design greatness.
From the development of the first truly remote-controlled preamp to early experimentation with battery-based (DC) power supplies, Jeff Rowland Design Group has generated a formidable list of design achievements that have served to first reinvent and then redefine the capabilities of an entire category of audio components.
Whether considering the elegant chassis design, the simple yet well conceived control functions or its unparalleled sonic virtues, a Jeff Rowland Design Group preamplifier brooks little competition and no comparison. At Jeff Rowland Design Group the song remains the same, an impressive history playing smoothly into a promising future of aural delights. |
| Technische Daten: |
| 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: |
13.5 volts (RMS) |
| Output Noise Level: |
43 Microvolts, Unweighted, 20 Hz to 20 kHz Bandwidth, 0 dB Gain |
| THD + Noise: |
< 0.003% @ 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: |
> 110 dB, 20 Hz – 20 kHz |
| 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 |
