Croft Charisma

The Croft Charisma is a pre-amplifier with several key specifications including a tube complement of three ECC83 (12AX7) tubes, a line input sensitivity of 250mV, and a line input impedance of 100k ohms. It also has a phono input sensitivity of 1.5mV and a phono input impedance of 47k ohms. The Croft Charisma is known for its natural tone, excellent rhythm and timing, and transparency due to its simplified circuit design.

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Tube Complement: Three ECC83 (12AX7)
Line Input Sensitivity: 250mV
Line Input Impedance: 100k ohms
Phono Input Sensitivity: 1.5mV
Phono Input Impedance: 47k ohms
Frequency Response: 0.15Hz-150kHz, +/-1dB
Gain: Tuner input 1KHz Left output Gain 5.68/1.34=4.2 (from test results)
Maximum Output: Tuner input 1KHz Right output max just before clipping Gain 22.6/5.44=4.2 (from test results)
Phono Input Gain: Pickup input 1KHz Right Gain 39.6/.0795=498 (from test results)