Here's what KMA say about the Tyler:
KMA Audio Machines bring you Tyler – The Frequency Splitter. The ultimate tool for developing new sounds and pushing your creativity to new unprecedented heights.
Tyler is an active and variable two channel crossover/signal splitter, which divides your signal with HIGH PASS and LOW PASS paths. Both filters have a 12db/Oct. roll-off with a variable cut-off frequency from 20Hz to 3kHz. Each channel has its own foot-switchable buffered FX-Loop to process your lows (WOOD) or your highs (STEEL) with independent effects loops in parallel.
The MIX knob controls the ratio of the Low Pass and High Pass signals. The range goes from 100% LP over to a 50/50 ratio until 100% HP when set fully clockwise. The mix control has a flat response, with equally chosen cut-off frequencies for the LP and HP to avoid notches or bumps. If required, the LEVEL control can boost your mixed signal up to 14dB. To avoid any phase-cancellation issues when external pedals are inserted, we also added a phase inverter and internal trim pots to better control the impedance for not only the main input, but also for each effects-loop. This is pretty handy when you want to insert your favourite fuzz pedal and get the tone just right.
Some examples of use: Bass players want to retain their low end while using their favourite fuzz or dirt pedal. Insert your dirt box in the highpass FX-Loop and adjust the cut-off frequency of the High and Low Pass to your needs. Dial in your preferred ratio of those Low and High Pass signals, engage the STEEL footswitch and you will never turn off TYLER again! You can also insert different modulation pedals, for example insert a lush phaser for the lows and a nice shimmering delay for the highs and TYLER will make it sound like two different guitars are playing at once. Mix up your modulation pedals with any dirt pedals, for a very pronounced and punchy sound all coming from one amp.