The MXR M159 Tremolo pedal is an all analog stereo effect that produces warm, pulsing tremolo. The M159 operates on 18 volts for lots of headroom and low noise. For warm vintage tremolo sounds, check out the MXR M159 Tremolo pedal.
The Mojo Hand FX Bayou Trem offers the sinuous throb of vintage amp tremolos, with a few modern features. The Bayou Trem has a pulsing LED, three simple controls for every variety of tremolo or a substantial boost, and true bypass switching.