What's the difference between a Tube Screamer and the SD-1?
The SD1 has a higher value input capacitor, and is said to remove around 10% of the input signal compared to only about 1% for TS9 (not accounting for the guitar output impedance). Also there are two high pass filters on SD1 with the same cut frequency at 50Hz, whereas the TS9 has “only” one at 100Hz. They more or less end up being similar, aside from those features...




