I purchased the Ibanez TS9B secondhand and normally had the settings set to high to even register that it was making an impact on the sound coming from the bass.
After having played with it on my ever growing pedal board for about a year to provide a very mid heavy muted fuzzy farty overdrive, I decided to purchase an Empress Multidrive that was going cheap, so the Ibanez was sacrificed and sold.
Just before it was sold, I discovered the sheer joy of the sound when combining an Aguilar Agro with the Ibanez pedal.
On the occasions when I remember the Ibanez TS9B, and have access to my pedal board, I will try to emulate that combination using the Multidrive Overdrive option instead.
I would buy the Ibanez pedal again - they are also built like a tank.