Based on xotic BB Preamp/  Overdrive
MINI BB Preamp

Review by Talk Bass.com

Product Page

Demo by Fabian Lopes

Demo by ChoptonesOfficial

B-Box

DELUXE PREAMP GUITAR EFFECT PEDAL BOOST AND OVERDRIVE.

Can use the pedal as   Boost,Overdrive,Preamp.

Demo by Rudy Bressers

Demo by Aaron J Livecchi

Review by reddit /guitarpedals

Review by The Gear Page

Review by Stompbox Steals 

Deluxe Preamp

Drive, Volume, & Tone Controls: pretty standard fare one most overdrives for letting you dial in the gain, adjust the output volume, and find just the right tonal balance.
HP/LP Switch: The High-Peak function gives you increased distortion and low-end, thickening up your sound for a more “British” flavor. The Low-Peak mode gives you a more accurate rendition of your sound with very little coloration of your tone

Review by delicious audio

Demo by Tommy Use

Demo by Pedal Fight

Obsessive Overdrive

CH-Vibe

Based on the Timmy, with 4 different versions of the circuit to choose from.

Mosky Audio Transparent Overdrive - Pedal Experiments