Magazin de Muzică MUSICON

Smart Phono de la Clearaudio este fără dubiu unul dintre cele mai performante preamplificatoare pentru doză din lume, performanţele sale sonore fiind fără precedent la această categorie de preţ. Câştigul foarte bun în decibeli, răspunsul în frecvenţă extrem de liniar şi amplificatorul pentru căşti “ascuns” în carcasa minimalistă din aluminiu sunt doar câteva dintre atuurile acestui phono stage de calitate.
Garanţie: 24 luni
Technical Specifications:
AMPLIFICATION @ 1 KHZ – 34 dB (MM-Mode) 65 dB (MC-Mode)
INPUT IMPEDANCE – 47 kOhm / 150pF, 250pF, 400pF / MM
50 OHm, 100 Ohm, 500 Ohm, 1 KOhm, 5kOhm/150pF, 250pF, 400pF / MC
MM / MC INPUT – switchable (at bottom)
SUBSONIC FILTER – switchable (at bottom)
RIAA – delay time: 75 μs / 318 μs / 3180 μs
RIAA ACCURACY – ± 0.3 dB @ 10 Hz – 100 kHz
THD – < 0,004% MC (“A” @ 1 kHz / -1 dB @ MAX)
HEADROOM – 18 dB / MC (Gain Control on MAX)
SIGNAL TO NOISE RATIO – 72 dB / MC (“A” weighted)
85 dB / MM (“A” weighted)
CHANNEL SEPARATION – > 90 dB @ 1 kHz
MAX. OUTPUT VOLTAGE – 10 V eff. (1 kHz)
POWER SUPPLY – ± 18 V DC / 300 mA (external power supply)
OUTPUT CONNECTIONS – unbalanced (RCA)
WEIGHT Approx. 620 g (Preamp and power supply)
DIMENSIONS (W/D/H in inches) 3.74 x 4.92 x 1.34
DIMENSIONS (W/D/H in mm) 95 x 125 x 34
User Manual Clearaudio Smart Phono .PDF

Parasound Zphono XRM este un preamplificator excelent, echilibrat atât din punct de vedere al sunetului cât şi al electronicii sale. Cu o bună separare a canalelor, zgomot foarte redus şi distorsiuni foarte mici discurile vinyl ascultate prin acest phono stage se aud complet, cu multe detalii.
Garanţie: 24 luni
Technical Specifications:
Frequency Response – 20-20 kHz, +/- 0.2 dB
Total Harmonic Distortion – 0.02% at 1 kHz
Signal to Noise Ratio, MM 40 dB Setting
> 94 dB, input shorted, IHF A-weighted
> 90 dB, input shorted, unweighted
Signal to Noise Ratio, MM 50 dB Setting
> 94 dB, input shorted, IHF A-weighted
> 90 dB, input shorted, unweighted
Signal to Noise Ratio, MC 50 dB Setting
> 92 dB, input shorted, IHF A-weighted
> 88 dB, input shorted, unweighted
Signal to Noise Ratio, MC 60 dB Setting
> 82 dB, input shorted, IHF A-weighted
> 80 dB, input shorted, unweighted
Inter-channel Crosstalk – > 80 dB at 1 kHz
Input Impedance – MM: 47k Ω / MC: 50-1050 Ω
Output Impedance – Unbalanced: 150 Ω / Balanced: 150 Ω per leg
Input Sensitivity at 1 kHz, 4mV Input
40 dB: 5 mV for 500mV output
50 dB: 5 mV for 1.5 Volts output
60 dB: 5 mV for 3 Volts output
Input Sensitivity at 1 kHz, 1V Output
40 dB: 10 mV for 1.0 Volt output
50 dB: 3.5 mV for 1.0 Volt output
60 dB: 1.8 mV for 1.0 Volt output
Total Gain
40 dB / 50 dB / 60 dB (unbalanced output)
46 dB / 56 dB / 66 dB (balanced output)
Rumble Filter
40 Hz high pass, 18 dB /oct.
Dimensions
Width: 8.5″ (220 mm)
Depth: 10″ (254 mm)
Depth: 12″ (305 mm) – cables connected
Height, with feet: 2″ (51 mm)
Height, without feet: 1.75″ (45 mm), 1U Weight
Net: 3.9 lbs. (1.8kg)
Shipping: 6.8 lbs. (3.1 kg)
Zphono XRM Owner’s Guide .PDF