I have a Radial PZ-Pre Tonebone. Does a lot more than just split the signal, of course. Got it for $245 on sale. Really got it for live use, but also works for recording purposes,
Two 1/4" instrument inputs, switchable A/B or both. Also switchable piezo preamps on the inputs.
3 band EQ with sweepable mid, and low notch filter. Amp output phase switch.
Pre- and post-EQ XLR outputs, 1/4" amp (instrument level) output, dedicated 1/4" tuner pedal output.
Switchable FX loop with adjustable internal boost on same switch. Mute switch (all outputs except tuner).