The TK Audio SP501 input stage is built around a high quality Swedish Lundahl transformer followed by a germanium stage that adds more harmonics. Two different output stages can be selected – either an electronically balanced stage, or a discrete transformer-balanced class-A stage sporting a heavy Carnhill output transformer. Vintage Class A mode produces a fat and punchy sound with mid-range character and a warm top end, while the electronically balanced output stage is less colored and perfect for clean amplification. A sweepable HPF from 30Hz to 400Hz allows precision crafting of the low end.
Features of the TK audio SP501:
- Gain switch in 5dB steps. -25 to 80dB. +5dB to -50 with pad
-30dB pad - 48v phantom power
- Selectable output stage: vintage transformer balanced class-A or electronically balanced
- Germanium drive: inserts a germanium gain stage after the input stage
- Sweepable high pass filter, 30-400Hz, 12dB sloop
- Polarity switch
- Impedance switch: 1600ohm/400ohm
- Hi-Z input, instrument input with more than 2Mohm input impedance
- Output level control
- Illuminated switches, except for the phantom toggle switch
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