PedalCurrent drawAdapter*
Compact pedals
AC-2 Acoustic Simulator18 mAPSA
AC-3 Acoustic Simulator39 mAPSA
AD-2 Acoustic Preamp55 mAPSA
AW-2 Auto Wah15 mAPSA
AW-3 Dynamic Wah45 mAPSA
BB-1X Bass Driver54 mAPSA
BC-1X Bass Comp90 mAPSA (internally doubled to 18vDC, so don't go above 9vDC input voltage)
BC-2 Combo Drive45 mAPSA
BD-2 Blues Driver13 mAPSA
BD-2w Blues Driver (Waza Craft)18 mAPSA
BF-2 Flanger15-18 mA (fluctuating)ACA/PSA
BF-2B Bass Flanger14 mAACA 12v
BF-3 Flanger40 mAPSA
CE-2 Chorus9 mAACA 12v
CE-2B Bass Chorus9-11 mA (fluctuating)ACA 12v
CE-2w Chorus (Waza Craft25 mAPSA
CEB-3 Bass Chorus18 mA PSA
CE-3 Chorus13 mA ACA 12v
CE-5 Chorus Ensemble20 mAPSA
CH-1 Super Chorus15 mAPSA
CP-1X Compressor90 mAPSA (internally doubled to 18vDC, so don't go above 9vDC input voltage)
CS-1 Compressor5 mA ACA 12v
CS-2 Compressor4 mAACA 12v
CS-3 Compressor10 mAPSA
DA-2 Adaptive Distortion45 mAPSA
DC-2 Dimension C30 mAPSA
DC-3 Digital Dimension / Digital Space-D60 mA PSA
DD-2 Digital Delay57 mAPSA
DD-3 Digital Delay45-57 mA (depending on the version)PSA
DD-5 Digital Delay57 mAPSA
DD-6 Digital Delay55 mA PSA
DD-7 Digital Delay52 mAPSA
DF-2 Super Feedbacker & Distortion10 mA ACA 12v
DM-2 Delay11 mA ACA 12v
DM-2w Delay (Waza Craft)35 mAPSA
DM-3 Delay11 mAACA 12v
DN-2 Dyna Drive36 mA PSA
DS-1 Distortion4 mA (20 mA stated)ACA/PSA
DS-1X Distortion45 mAPSA
DS-2 Turbo Distortion12 mA PSA
DSD-2 Digital Sampler/Delay55 mA PSA
DSD-3 Digital Sampler/Delay55 mAPSA
EH-2 Enhancer24 mAPSA
FBM-1 Fender ’59 Bassman (COSM)36 mAPSA
FDR-1 Fender ’65 Deluxe Reverb (COSM)40 mAPSA
FRV-1 Fender Reverb37 mAPSA
FT-2 Dynamic Filter16 mA ACA 12v
FZ-1w Fuzz (Waza Craft)16 mAPSA
FZ-2 Hyper Fuzz14 mA (65mA stated)PSA
FZ-3 Fuzz6 mAPSA
FZ-5 Fuzz (COSM)36 mAPSA
GE-6 Equalizer7 mAACA 12v
GE-7 Equalizer7 mAACA/PSA
GE-7B Bass Equalizer16 mA ACA 12v
GEB-7 Bass Equalizer17 mAACA/PSA
HF-2 Hi Band Flanger18 mA ACA 12v
HM-2 Heavy Metal10 mAACA 12v
HM-3 Hyper Metal12 mAPSA
HR-2 Harmonist75 mA PSA
JB-2 Angry Driver50 mAPSA
LM-2 Limiter12mA ACA 12v
LM-2B Bass Limiter16 mA?
LMB-3 Bass Limiter Enhancer17 mA PSA
LS-2 Line Selector20 mAPSA
MD-2 Mega Distortion18 mAPSA
ML-2 Metal Core30 mAPSA
MO-2 Multi Overtone40 mAPSA
MT-2 Metal Zone20 mAPSA
MT-2w Metal Zone (Waza Craft)35 mAPSA
MZ-2 Digital Metalizer70 mAPSA
NF-1 Noise Gate4 mAACA 12v
NS-2 Noise Suppressor20 mAPSA
OC-2 Octave4 mAACA/PSA
OC-3 Super Octave45 mAPSA
OC-5 Octave55 mAPSA
OD-1 OverDrive4.5 mAACA 12v
OD-1X OverDrive45 mAPSA
OD-2 Turbo Overdrive10 mAACA 12v
OD-2R Turbo Overdrive16 mAPSA
OD-3 Overdrive9 mAPSA
ODB-3 Bass Overdrive13 mAPSA
OS-2 Overdrive/Distortion12 mAPSA
PH-1 Phaser7 mAACA 12v
PH-1R Phaser11 mAACA 12v
PH-2 Super Phaser16 mAACA/PSA
PH-3 Phase Shifter50 mAPSA
PN-2 Tremolo/Pan20 mAPSA
PQ-3B Bass Parametric EQ25 mA PSA
PQ-4 Parametric EQ21 mAPSA
PS-2 Digital Pitch Shifter/Delay60 mAPSA
PS-3 Digital Pitch Shifter/Delay70 mAPSA
PS-5 Super Shifter50 mAPSA
PS-6 Harmonist45 mA PSA
PW-2 Power Driver15 mAPSA
PW-10 V-wah55 mA PSA
RC-1 Loop Station72 mAPSA
RC-2 Loop Station95 mA PSA
RC-2 Loop Station50 mAPSA
RC-3 Loop Station70 mAPSA
RC-5 Loop Station170 mAPSA
RE-2 Space Echo75 mAPSA
RV-2 Digital Reverb130 mA PSA
RV-3 Digital Reverb/Delay70 mAPSA
RV-5 Digital Reverb50 mAPSA
RV-6 Reverb65 mAPSA
SD-1 Super Overdrive5 mAACA/PSA
SD-1w Super Overdrive (Waza Craft)15 mAPSA
SD-2 Dual Overdrive21 mAPSA
SG-1 Slow Gear7 mAACA 12v
SP-1 Spectrum23 mAACA 12v
ST-2 Power Stack36 mAPSA
SY-1 Synthesizer85 mAPSA
SYB-3 Bass Synthesizer80 mAPSA
TB-2w Tone Bender60 mAPSA
TE-2 Tera Echo53 mAPSA
TR-2 Tremolo19 mAPSA
TU-2 Tuner35 mA maxPSA
TU-3 Tuner35 mA max (85 mA in high brightness mode)PSA
TU-3S Chromatic Tuner35 mA max (95 mA in high brightness mode)PSA
TU-3w Tuner (Waza Craft)60 mA max (110 mA in high brightness mode)PSA
TW-1 Touch Wah / T Wah6 mAACA 12v
VB-2 Vibrato14 mAACA 12v
VB-2w Vibrato (Waza Craft)35 mAPSA
VO-1 Vocoder65 mA PSA
XT-2 Xtortion15 mAPSA
Twin pedals
CE-20 Chorus Ensemble165 mAPSA
DD-20 Digital Delay172 mAPSA
EQ-20 Advanced Equalizer120 mAPSA
GP-20 Amp Factory85 mA PSA
OC-20G Poly Octave?PSA
OD-20 Drive Zone85 mAPSA
RC-20 Loop Station85 mAPSA
RC-20XL Loop Station106 mAPSA
RC-30 Loop Station195 mA max PSA
RE-20 Space Echo75 mAPSA
RT-20 Rotary Processor85 mAPSA
SL-20 Slicer110 mAPSA
VE-20 Vocal Performer180 mA maxPSA
WP-20G Wave Processor?PSA
200 series
DD-200 Digital Delay225 mAPSA
EQ-200 Graphic Equalizer170 mAPSA
MD-200 Modulation225 mAPSA
OD-200 Hybrid Drive220 mAPSA
RE-202 Space Echo140 mAPSA
500 series
DD-500 Digital Delay200 mAPSA
MD-500 Modulation225 mAPSA
RC-500 Loop Station240 mA (330 mA with phantom power active)PSA
RV-500 Reverb225 mAPSA
VE-500 Vocal Performer210 mA (310 mA with phantom power active)PSA
AD-3 Acoustic Instrument Processor90 mAPSA
AD-8 Acoustic Guitar Processor120 mAPSA
AD-10 Acoustic Preamp300 mAPSA-S (9vDC, center negative)
ES-5 Effects Switching System125 mA9vDC, center negative
ES-8 Effects Switching System400 mA9vDC, center negative
FW-3 Foot Wah5 mAPSA
GT-1 Guitar Effects Processor
GT-1B Bass Effects Processor
200 mAPSA
MS-3 Multi Effects Switcher280 mAPSA-S (9vDC, center negative)
PW-3 Wah Pedal25 mAPSA
PW-10 V-wah55 mAPSA
RC-10R Rhythm Loop Station250 mAPSA-S (9vDC, center negative)
RC-300 Loop Station350 mA max9vDC, center negative

* Note:

All Boss pedals have a sticker near the adapter jack, which indicates which adapter is needed. PSA pedals wants to see a regulated 9vDC adapter, while ACA pedals needs regulated 12vDC (the original ACA adapter was 9vDC unregulated, which turns out to about 12vDC at the loads these pedals put on it). Since august 1997, all Boss pedals (including surviving ACA designs) use 9 volts DC and are labeled ”PSA”.

Therefore, adapter listings that read ”ACA/PSA” means that if the pedal is older than mid 1997 (ACA sticker), it wants the old-style ACA adapter/12vDC regulated. If it is newer (PSA sticker), or if it has been modified to PSA specs, it works fine with the 9vDC PSA adapter. To find out (if the sticker isn’t there), plug your regular 9vDC supply into the pedal in question (alone, without daisy chain) – if the LED barely lights up, the pedal is definitely an ACA model.

Also, old (pre august 1997) ACA pedals will work fine from 9vDC, if they are daisy-chained with regular PSA pedals, and have signal cables connected between them. There’s a more indepth article about it here, if you’re so inclined. But whatever you do, do not confuse ACA with ”AC” – the pedal still expects a DC input voltage, and feeding it 9vAC will fry it.


Blackout Effectors
Carl Martin