Simble Predriver is not just a preamp, it is a preamp/booster/compressor/upper harmonic enhancer

 This musical tonal combination is totally adjustable with your picking attack and guitar volume pot. The amount of boost depends on the input signal level and HOT/COOL switch position. The maximum is about +10dB on lower level notes and average is about +6dB.

Simble Predriver’s special circuitry uses low noise transistor with high input impedance (over 2 Mohm) so you can boost even piezo pickups without tone loss. The output impedance is 50 Kohm so it works even in front of fuzz pedals. The power consumption is very small if you remove the input jack when not playing you can use the pedal with a 9V battery for few years!

Demo by thejay

Official Product Video

Review by the Fretboard

Review by reddit /guitarpedals

Review by musicradar

Manual download

Product Page

Simble Predriver

A compact digital reverb pedal with pure-analog dry signal path, true-bypass switching, and controls for Time, Tone, and Reverb (depth), the Silver Spring proved a sparkling little performer in a range of settings. It ably subbed for a tube Fender Reverb Unit in front of a tweed-like combo for some surfy instrumentals, and worked equally well replacing a Bogner Goldfinger’s builtin spring reverb in the amp’s parallel FX loop. It doesn’t go splash when you kick it, and you might detect just a hair of pulsing in the wash of the effect’s decay, but all in all it’s a stellar sounding unit

Review by AMAZONA

Demo by Alberto Barrero

Demo by ProGuitarShopDemos

Manual

Silver Spring Reverb

Premium quality classic blues/rock pedal that works very well with complex overdriven amp sound. This pedal is now offered as lower-priced pcb-model or hand-wired pedal. Both share the same specs and tone.
It’s a low compression, high headroom overdrive with high output, and it has a Body knob for adjusting low-mid content and treble. The LGW was made to be a stackable overdrive that could go anywhere in the pedal chain and the compression normally associated with this type of circuit is reduced same as several distortion mechanisms.

Review by highpointmusic

Review by bonedo

Demo by Prymaxe

Demo by Guitarist Magazine

Little Green Wonder

Rich, fat, warm sound and well thought out functionality makes the Mad Professor Dual Blue Delay one of the most clever, intuitive, and easy to use delay pedals currently available.

The short delay has a maximum delay time of 315ms and a fatter tone well suited for slapback and old-school tape echo tones. Long delay reaches 810ms and has a modern delay voicing, great for lead and ambient tones.

Both delays have wide range Tone controls for dialing in the perfect setting. Switch between the two delay channels or combine both together for huge dual-delay sounds. Keeping the On/Off switch depressed for 1 second brings you an exciting rhythmic multi-head mode. A must-have for all instrumental rock and Pink Floyd fans.Tap Tempo function is also included for use on the Long delay channel.

Dual Blue Delay is a powerful and intuitive pedal for the progressive musician.

Review by Seymour Duncan Forum

Review by mixdownmag

Review by The Gear Page

Dual blue delay

The tone is very musical and balanced thanks to carefully matched parts in the circuit. With the four controls, you can fine-tune the phaser effect to your taste. With the rotating switch you can choose between two different phase tones, the other is a light one and the other with the big fat low end and deep tone. With The Mix control, you can adjust phaser tones from very mild into deep phase effect. Speed range and amplitude of the internal oscillator are set to allow high phaser speeds without getting erratic.

You can find classic phasing sounds at about 12 o’clock speed setting, the lower settings produce a nice floating “Vibe”- a type of sound.

Demo by VintageandRare

Review by Premier Guitar