Tavish Design Adagio Vacuum Tube Phono Stage, Руководство пользователя

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8
4 T
ECHNICAL
I
NFORMATION
Parameter
Specification
Gain 44 dB Moving Magnet
64 dB Low-Output Moving Coil (JT-44K-DX)
62 dB Low-Output Moving Coil (JT-347-AXT 1:8)
65 dB Low-Output Moving Coil (JT-347-AXT 1:12)
RIAA Equalization Accuracy ±0.2 dB, 20 Hz – 20 kHz
Signal-to-noise ratio
(A-weighted) >84 dBA ref. 5 mV @ 1kHz, Moving Magnet
>82 dBA ref. 0.5 mV @ 1kHz, Moving Coil
Reference Output Level 750 mV RMS (0 dBu)
Total Harmonic Distortion <0.008% at reference output level into 10 kΩ, 1 kHz
Output Overload (defined as 1%
THD level) >44 V RMS into 10 kΩ at 1 kHz (36dB overload margin)
Input Impedance, Moving Magnet 47.5 kΩ in parallel with fixed capacitance of approximately
20pF and adjustable capacitance of: 0pF, 50pF, 100pF, 150pF,
220pF, or 330pF
Input Impedance, Moving Coil Adjustable: 500 Ω (max), 400 Ω, 300 Ω, 200 Ω, 150 Ω, or 100 Ω
Output Impedance 100 Ω at 1 kHz
Suggested Load Impedance ≥10 kΩ
≤5000 pF (up to 150 feet of coaxial cable)
Tube Complement 5751 (x3), 6267/EF86 (x2), 12AU7A (x1)
Power 35 W, 120 VAC, 60 Hz
Main Phono Stage Size 8.6” wide, 10.2” deep, 2.2” high (3.9” high to top of tube guard)
Power Supply Size 8” wide, 10.2” deep, 2.2” high
Weight Phono Stage 4.6 lbs., Power Supply 3.1 lbs. (15 lbs. shipping
weight)
Table 4.1: Phono stage performance. Measurements are taken with JJ 5751, JJ (or Electro-Harmonix)
6267/EF86S, and JJ ECC82 tubes, as supplied. JJ 12AX7 / ECC83 are sometimes supplied in place of 5751,
depending on which low noise tubes we have in stock.
Tavish Design phono stages are designed to implement the traditional RIAA replay curve. We do not
implement the 1976 IEC Amendment which rolls off the replay response at 6dB/octave below 20Hz, and
we do not implement the occasionally discussed “Neumann pole” at 50 kHz. The 50 kHz pole is not part
of the RIAA standard.