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  • Order Code:AM002460
  • Brand:Analog Metric
  • Market price:$160.00
  • Shop price:$160.00
  • Member Price：$158.40
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  • Rank:comment rank 5
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M7C SRPP S2 Preamplifier Kit Set (Stereo)

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  • M7C SRPP S2 Preamplifier Kit Set (Stereo)

Description

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Features
1. Circuit design is modified based on the classical Marantz 7C and the component values are optimized.
2. Output stage is changed to 12AU7 SRPP to provide wide bandwidth and low distortion
3. Two 12AX7 and two 12AU7 vacuum tubes.
4. Use of WIMA / Solen MPK film capacitors, Nichicon Audio capacitors, BHC Averox capacitors, and Dale resistors.
5. Low voltage dropout regulator LT1085 is used to provide regulated power for tubes filament, which gives a maximum output driving current of the IC is 3A which is far enough for filament power supply.
6. Dedicated power and ground rails for tube power and tube filaments.
7. Symmetry in layout design for both channels.
8. Power requirement: one 280V AC (50mA) and one 12.6V AC (1A)
9. PCB dimension: 110mmx200mm, thickness 2.5mm and 2oz copper, two layers.

 

Specification

  • Voltage gain: 22dB
  • Gain flatness: <0.05dB for 20-20KHz
  • Frequence range: 20-20KHz
  • Bandwidth: >100kHz
  • Input Impedance: 85K Ohms
  • Output Impedance: 67 Ohms
  • Input Sensitivity: 6V RMS
  • S/N Ratio > 92dB
  • THD+N < 0.035% @1KHz
  • Stereo single-end input and output

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