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Electro-Harmonix Germanium 4 Big Muff Pi Overdrive and Distortion Guitar Effects Pedal
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Electro-Harmonix Germanium 4 Big Muff Pi - In Depth demo

Description
In addition to a Gain control, the Electro-Harmonix Germanium 4 overdrive lets you control Bias for attack and the circuit volts for that sweet spot found when a battery's voltage dips.
The Gain control adjusts the amount of input signal that is fed to the Electro-Harmonix Germanium 4. The more the knob is rotated, the harder the germanium transistor and drive components are hit. The Bias control adjusts the current gain that is sent to the Germanium transistor. It works together with the Voltage control to attain the overall tone. The bias control works specifically with the Germanium transistor. The Volts knob controls the amount of voltage that is applied to the Germanium OD. Set at full, 9V is applied. When set at minimum, 3V is applied. By limiting the voltage a number of interesting saturations can be set up for variations in tone.
A footswitch turns true bypass on or off.
The Electro-Harmonix Germanium 4 runs off of a 9V battery, or you can connect a 9VDC adapter capable of delivering at least 100mA to the 9V power jack. The optional 9V power supply from Electro-Harmonix is 9.6DC-200BI (same as used by BOSS and Ibanez) 9.6V DC 200mA (sold separately). The AC power adapter must have a barrel connector with center negative. The battery may be left in or taken out when using an adapter.

Features
- True bypass
- Gain control
- Bias knob for putting your sound right at the edge of break up
- Volts knob for reducing battery voltage
- Countless germanium variations at the touch of a knob
- Tough and compact die-cast chassis
- 9-volt battery included
- Optional US96DC-200BI power supply available (sold separately)
Reviews
4.25
12 Reviews
100%
of respondents would recommend this to a friend
Most Liked Positive Review
nice ratchety fuzz, with a good od built in
so far super happy with it, great for that desert rock sound and vintage vibes, definitely more of an effect than a modern gain, but since i play stoner metal it fits me perfect, i have to use it before a TS9 to keep it nice and tight, going into the clean channel of a 6505+, hit it with a octave pedal and stock gibson 500t and its a glorious happening...a strat does make it a little less loose and records a little more focused... i love mine just hope the germaniums last forever
Most Liked Negative Review
just no
This pedal is just terrible When i first plugged it in i was in standard tuning and it sounded fine just a bit fuzzy on the low E but when i went to go play in drop-D everything just sounded muddy The OD was ok but the Distortion is just terrible DO NOT BUY THIS
- Amateur Recording3
- Performances3
- Home Studio2
- Outdoor Events / Games1
- Professional Recording1
- Experienced6
- Professional Musician1
- Responsive6
- Versatile6
- Excellent Sound Quality5
- Good Selection Of Effects4
- Compact2
Reviewed by 12 customers
As advertised. Decent sound.
Verified Buyer
submitteda year ago
byBob
fromColorado Springs CO
Submitted as part of a sweepstakes
Variety of tones available by adjusting the knobs. Plus stacking OD and fuzz/distortion is nice.
Decent variety of tones
Verified Buyer
submitteda year ago
byBob
fromColorado Springs CO
Submitted as part of a sweepstakes
There's a good variety of tones that can be found in this thing. From splatty fuzz to balls to the wall distortion. It's a loose sounding pedal. If you like tight and refined, forget it.
Amazing!
Verified Buyer
submitted2 years ago
byMike
fromFlorida
Submitted as part of a sweepstakes
A knob twisters delight! I would recommend putting all the knobs at noon with the "volts" all the way up to start and then experiment with each control from there. Lots of sounds can be coaxed out of this beast. Not a super high-gain pedal but plenty for my tastes (bluesy/garage/stoner/neo-psychadelic). The germanium really changes the character of the big muff circuit, this is a whole new pedal with a unique sound. From smooth low gain to nasty gated distortion, this pedal has a lot to offer. The overdrive side sounds so good I pretty much never turn it off! Roll back the volume on your guitar and it cleans up nicely. I love it!
This is it !
submitted2 years ago
byMixoblast
fromChicago
The muff that cleans up with volume control , just wonderful clean sounds and work the volume and get spitting fuzz or full wall of sound , btw cleans up with both sides on!!! This pedal is incredible!
Buy this pedal !
submitted2 years ago
byDan
fromChicago
I am still wondering if the components are cheap or what's the reason behind such a good price this pedal just became my favorite of them. It brings the high end back into the signal chain, and you will be amazed on how good it sounds as a always pedal at low gain
If you don't like this, you may need a pedal with less knobs
submitted8 years ago
byLord Matticus
fromGrand Rapids, MI
This is now a main stay on my board. I push it with a Klone pedal in front of it. The OD gives a very nice sparkle to it, maybe a little dirt if you want for a clean channel, or can really push you dirt channels great. The distortion side has so many options, it can stay nice and crisp, or get the softer hendrix type fuzz. the voltage knob can make the whole thing get naughty in a hurry. love it to death. I run the over drive at near noon for the bias, gain, tone, and volume at 3 to 4. I run the Distortion side with gain at about 10, bias at 4, voltage at 1/2, volume at 3. the more the voltage goes down, the more it compresses. I have it set so it sounds almost like a distortion/fuzz/octave mixed pedal. sounds amazing on a clean channel, even sweeter on a lightly broken up dirt channel. I have run this through my highly modifies Fender Blues Deluxe (non-reissue) has marshall type power section running Gold Lion KT88's. Also put through my modified 6505 combo(not plus and with reverb in circuit has good clean). and it sounds great with my Rockerverb clean. The dirt on my Rockerverb is the only one that it gets kinda sketchy because I push SO much low end and air with the stack, partial due to running the Vintage 30's. the peavey set up Like an invective cab by peavey, and the Fender uses Celestion cream back heavy magnets.
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