The FINAL BOOSTER is a full-range booster that emphasizes the sound quality. It allows to boost the signal that were converted to low impedance on Vitalizer™ circuit up to 20db.

Manual

Demo by Guitar Interactive Mag

Demo by Jimmy Lin『JL Music Studio』

Product Page

VFB-1 Vitalizer Final Booster

The result is hard-hitting distortion with a big low end that is similar to what you'd expect from a large amp stack driven hard. Gain and tone controls make it possible to dial in anything from a natural crunch to fuzzy, dirty distortion, providing a broad spectrum of tones that can add new dimensions to your music.

Review by No Treble

Review by Premier Guitar

Demo by Masaki Murashita

Official Product Video

Brick Drive BDI-1

Manual stv-1jb

Providence System Tuner STV-1 JB BK

The Providence SOV-2 Stampede OD pedal is designed to deliver natural overdrive without obscuring the inherent characteristics and tone of the guitar being used. For singing lead tones and solid, chunky rhythms, there's nothing like the SOV-2 Stampede OD.

Review by reddit /guitarpedals

Review by The Gear Page

Review by bonedo

Demo by intheblues

Demo by Mike Hermans

SOV-2 Stampede OD 

Loaded with Threshold and Mix control to make the best use of bass' dynamics and able to create various sounds.

It also able to adjust the volume without losing player's sound character by smooth compression without extra tonal change.

Review by Talk Bass.com

Demo by MrExcane