I tried a new pedal combo tonight and something confusing happened. Hoping someone can explain it. I have a Sunface TI UK. Sounds great, but on mine the volume has to be maxed to hit unity gain, which seems odd. I put a Grand Orbiter phaser before it for the first time. With the Sunface off, the Grand Orbiter on/off was just about equal volume. Super small boost when on. When the Sunface was on and the Grand Orbiter was on, however, there was a very clear boost. The Sunface was definitely being driven. Turn the Grand Orbiter off, and the Sunface went back to normal. So the GO was only producing a boost when booth it and the Sunface were on. What's the deal? Is this a buffer effect? ...I don't understand buffers?!