Stereo Amplifier Series 7

Croft Acoustics Series 7

• Type: Stereo hybrid power amplifier
• Input Stage:
  • Single ECC83 (12AX7) dual-triode vacuum tube for voltage amplification.
  • Output Stage:
  • High-quality MOSFETs for current amplification and speaker drive.
• Topology:
  • Minimalist hybrid design: tube input, MOSFET output.
• Power Output:
  • 45–50 watts per channel into 8 ohms (stereo configuration).
• Construction:
  • Hand-wired, point-to-point assembly; no printed circuit boards.
  • Shared chassis design with other Croft models to reduce cost.
• Inputs/Outputs:
  • Pair of RCA input jacks, output binding posts for speakers.
• Sound/Performance:
  • Prioritises musicality, inner detail, and control.
  • Performs best with speakers of ~90dB sensitivity or higher.
• Physical Characteristics:
  • Relatively lightweight due to a modest transformer and minimalist construction.
• Typical Use:
  • Suitable for moderate to high-sensitivity speakers, both budget and high-end systems.

Summary:
The Series 7 is a minimalist stereo hybrid amplifier with a tube input and MOSFET output, designed for high musicality and value. The Series 7R is a monoblock, regulated version with a larger power supply and additional voltage regulation, offering enhanced channel separation, control, and sonic refinement.

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