- High voltage soft start power supply puts out over 270 volts of clean, regulated power to ensure maximum headroom and the lowest noise possible
- Each gain stage is single-ended, inherently Class A
- Audio Magnetics (Input and Output Transformers, Plate Inductor) custom wound by Cinemag
- Output Transformer with 50% nickel core
- Frequency response is flat within 2 dB from 20 Hz-30 kHz
- Each channel of the SFP-30 features 4 switches: High Pass Filter, Input Pad, Phase Reverse, and Phantom Power
- Front panel switches control sealed, gold-plated relays to ensure years of operation without pops and clicks
- The input and output levels of the triode stages of the SFP-30 are separately controllable by detented attenuators, and combined with the color control, the SFP-30 provides just over 55 dB of useable gain
- Voltage selector for 115/230 volt operation in the IEC fuse block on black panel, gold-plated XLR connectors are on the front panel
- The only active devices in the signal path are the three tube gain stages, consisting of 1 EF806 and 1 ECC82 per channel
- New-manufacture JJ tubes for long life and easy replacement
- Each channel features an output level VU meter, which is op-amp buffered to ensure that the signal is not loaded by the meter
- The audio power supply features a toroidal dual-primary transformer and linear regulation for lowest noise
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