Parasound Halo JC3 Jr. Phono Preamplifier
FEATURES:
- Circuitry designed by legendary John Curl
- Circuit board layout by Carl Thompson
- Cartridge options for 47k Ω MM and MC/MI
- Variable MC impedance adjustment of 50-550 ohms
- Gain select for 40 dB/50 dB/60 dB unbalanced (46 dB/56 dB/66 dB balanced)
- Balanced and unbalanced outputs
- Mono switch can improve sound of mono & older LPs
- Convenient auto turn-on by 12V trigger
- RIAA accurate to within 0.2 dB
- Incredible S/N up to 94 dB and THD less than 0.02%
- Vishay-Dale resistors in the audio path
- Aluminum shield separates power supply and audio circuits
- Shielded toroid power transformer
- High speed-soft recovery bridge rectifiers and common mode inductors
- Vampire brand 24k gold-plated RCA jacks
- Neutrik brand locking balanced XLR outputs connectors
- Compact 1U chassis (2.5" high with feet)
- Available in silver or black
SPECIFICATIONS:
- Frequency Response: 20-20Khz, +/- 0.2dB
- Total Harmonic Distortion: < 0.02% at 1 kHz
- Signal to Noise Ratio, 40 dB Setting: >85dB, input shorted, IHF A-weighted; >80dB, input shorted, unweighted
- Signal to Noise Ratio, 50 dB Setting: >89dB, input shorted, IHF A-weighted; >84dB, input shorted unweighted
- Signal to Noise Ratio, 60 dB Setting: >94dB, input shorted, IHF A-weighted; >91dB, input shorted, unweighted
- Inter-channel Crosstalk: >80 dB at 1 kHz
- Input Impedance: MM or MI: 47k Ω; MC Variable: 50- 550 Ω
- Output Impedance: Unbalanced: < 100 Ω; Balanced: < 100 Ω per leg
- Input Capacitance: 150 pF
- Input Sensitivity at 1 kHz, 4mV Input: 40 dB: 4 mV for 450mV output; 50 dB: 4 mV for 1.4 Volts output; 60 dB: 4 mV for 4.25 Volts output
- Input Sensitivity at 1 kHz, 1V Output: 40 dB: 9 mV for 1.0 Volt output; 50 dB: 3 mV for 1.0 Volt output; 60 dB: 0.9 mV for 1.0 Volt output
- Total Gain: 40 dB / 50 dB / 60 dB (unbalanced output); 46 dB / 56 dB / 66 dB (balanced output)
- XLR Pin Identification: 1 = Ground (Shield), 2 = Positive, 3 = Negative (Return)
- AC Power Requirement: Standby: <1 watt; Power On: 9 watts 115 VAC or 230 VAC 50 - 60 Hz
- Dimensions