The Blessed Mother V2 is an analog overdrive and boost pedal from Heather Brown Electronicals, a small builder whose first pedal it was. It pairs germanium and silicon clipping diodes in one circuit, and its range runs from what RockBoard's PedalPedia calls "vintage, Tubescreamer-like grit to a heavenly, transparent boost"1. Delicious Audio classifies it as a light-gain, transparent overdrive with boost2.
The V2, released in December 2019, updates the original Blessed Mother with more output and headroom while keeping the same diode pairing and two-band EQ3. It carried a street price of $220 at launch4.
What it does
The Blessed Mother sits in the low-gain corner of the overdrive world. Pedal of the Day's reviewer found the original "works as a boost, low-gain drive and overall tone-shaper," and the V2 carries that flexibility forward with more output on tap6. The germanium and silicon diode pair is the heart of the character: Pedal of the Day wrote that it "generates a uniquely raw, yet velvety tone"6, and RockBoard echoes the same description for the V2, saying the gain has "a warm and sweet character"1.
Because the Immaculator knob can blend in your clean signal, the pedal covers ground from a full overdrive to something close to a boost pedal. Premier Guitar described the V2's Immaculator simply as a knob that "blends in clean signal"4.
Heather Brown Electronicals is a one-person operation. Pedal of the Day reported that each unit "is built, tested, and shipped by me," meaning Heather herself, and that she learned her skills from Mike Matthews of EHX and Robert Keeley6. The Blessed Mother was the company's first pedal and its only release before the Sensation Fuzzdrive27.
The controls
The control set is straightforward: volume, drive, treble and bass knobs, plus the Immaculator5. The two-band EQ is carried over from the original pedal3, and Delicious Audio calls its treble and bass range "powerful"2.
| Control | What it does |
|---|---|
| Volume | Sets the output level5 |
| Drive | Sets the amount of gain6 |
| Treble | Shapes the high end6 |
| Bass | Shapes the low end6 |
| Immaculator | Blends dry signal with the overdrive, controlling the drive's transparency14 |
The Immaculator is the control that sets the pedal apart. Guitar.com explained it as "an adjustable transparency function. Turning it fully clockwise filters in the gu"itar's dry signal, letting the pedal act as a clean boost while offering greater texture and clarity3. Pedal of the Day's take on the original: it lets you "preserve or purify the sound's original grit to your liking, blending your dry signal with the overdrive"6. In practice, it is a wet/dry blend that determines how much of your untouched guitar sound sits under the drive.
What changed from V1 to V2
The V2 keeps the circuit's identity and refines it. Guitar World reported that the new model "offers the same germanium/silicone diode combination, only with increased output and headroom for broad"er tone control5. Guitar.com similarly described the hybrid germanium-silicon circuitry as "tweaked to offer increased output and a greater tonal spectrum," with the two-band EQ and true-bypass switching retained from the predecessor3. Delicious Audio adds that the V2's tone controls are slightly more aggressive than the original's2.
If you find an original Blessed Mother, the practical differences are output level, headroom and tone control aggression. The diode pairing, EQ layout and true bypass are the same across both versions352.
Power: 9V or 18V
The V2 runs on 9V DC with a center negative plug and draws 33mA1. It also accepts 18V DC2, and guitar.com noted that running it at 18V "gives the pedal a greater amount of headroom"3. For players who want the cleanest boost behavior or extra clean volume before the drive breaks up, the 18V option is the reason to use a higher-voltage supply.
The Blessed Mother V2 runs on 9V or 18V DC, center negative, and the 18V option gives the pedal a greater amount of headroom than 9V operation253.
Other features include true bypass switching and what Guitar World called "a very cool 'halo' LED that stays lit when the pedal is engaged"5. True bypass was confirmed across the original and V2 by Premier Guitar, guitar.com and Delicious Audio432.
Videos
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Questions
What does the Immaculator knob do on the Blessed Mother?
The Immaculator is an adjustable transparency control that blends your dry guitar signal with the overdrive. Turned fully clockwise it filters in the dry signal, letting the pedal work as a clean boost with added texture and clarity. Reviewers describe it as a way to preserve or purify the sound's original grit to taste.
What changed between the Blessed Mother V1 and V2?
The V2 keeps the same germanium and silicon diode combination and the two-band treble and bass EQ, but the circuit is tweaked for increased output and more headroom, with slightly more aggressive tone controls. Guitar World described it as offering broader tone control compared to the original.
Is the Blessed Mother V2 true bypass?
Yes. Multiple sources, including Premier Guitar, Guitar World, guitar.com and Delicious Audio, all describe true bypass switching on both the original Blessed Mother and the V2, so the pedal passes your signal untouched when disengaged.
What diodes does the Blessed Mother use?
It uses a combination of germanium and silicon clipping diodes. Reviewers say this pairing generates what Pedal of the Day called a uniquely raw, yet velvety tone, and the same diode combination carries over from the original Blessed Mother to the V2.
How much current does the Blessed Mother V2 draw?
The Blessed Mother V2 draws 33mA, according to RockBoard's PedalPedia listing. It runs on 9V DC with a center negative plug, and can also operate at 18V, which guitar.com reported gives the pedal a greater amount of headroom.
Sources (7)
- The Blessed Mother V2 by Heather Brown Electronicals, RockBoard PedalPedia, 2026
- Heather Brown Blessed Mother Overdrive/Boost V2, Delicious Audio, 2023-08-17
- Heather Brown Electronicals updates its Blessed Mother Overdrive, guitar.com, 2019-12-09
- Heather Brown Launches Blessed Mother V2 Pedal, Premier Guitar, 2019-12-05
- Heather Brown Electronicals' Blessed Mother V2 is an overdrive pedal sent from the heavens, Guitar World, 2019-12-10
- Heather Brown Electronicals The Blessed Mother Overdrive, Pedal of the Day, 2021-05-03
- Heather Brown Sensation Fuzzdrive, Delicious Audio, 2022-12-21
