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MA Audio 5082HX

2 x 400W @ 4 ohms
2 x 700W @ 2 ohms
2 x 1200W @ 1 ohm
2 x 2000W @ 0.5 ohms
1 x 1400W @ 4 ohms bridge
1 x 2400W @ 2 ohms bridge
1 x 4000W @ 1 ohm bridge
Fuse: 300A ANL

MA Audio H2K-TP

Class-T Amplifier
450 Watts x 2 @ 4 Ohms
850 Watts x 2 @ 2 Ohms
1000 Watts x 2 @ 1 Ohm
2000 Watts x 1 @ 2 Ohms (Bridged)
Fuse: 3 x 30A

MA Audio HK-10KA

Class X amplifier
Output Power at 14.1V:
1 x 2500W @ 4 ohms
1 x 4000W @ 2 ohms
1 x 5000W @ 1 ohm
Output Power at 17.5V:
1 x 3500W @ 4 ohms
1 x 6000W @ 2 ohms
1 x 7000W @ 1 ohm
Dimensions: 29" x 12.4" x 2.71" (736mm x 315mm x 69mm)

Has a similar board layout as the Soundstream XXX6500.

MA Audio HK1998

1 x 600W @ 4 ohm
1 x 1200W @ 2 ohm
THD: 0.05%
S/N Ratio: >90dB
Fuse: 3 x 30A
Dimensions: 12.4" x 11.81" x 2.7" (31.5cm x 30cm x 6.9cm)

Credits: Mike from Proline Audio & More

MA Audio HK4000D

1 x 1800W @ 4 Ohm (14.4V)
1 x 3600W @ 2 Ohm (14.4V)
1 x 2000W @ 4 Ohm (17V)
1 x 4000W @ 2 Ohm (17V)

Same board as:
. Clif Designs CDX-20A
. Visonik V4000XD

Credits: dbEric from soundillusions.net

MA Audio HK401SX

1 x 500W RMS @ 4 Ohm Mono
1 x 650W RMS @ 2 Ohm Mono
1 x 1200W RMS @ 1 Ohm Mono
1 x 1800W RMS @ 0.5 Ohm Mono

MA Audio HK798

2 x 200W @ 4 ohms
2 x 300W @ 2 ohms
1 x 800W @ 4 ohms bridged
THD: <0.05%
Freq. Response: 20Hz ∼ 20kHz
S/N Ratio: >90dB
Channel Separation: 50dB
Fuse: 2 x 30A
Dimensions: 12.4" x 10.6" x 2.7" (31.5cm x 27cm x 6.9cm)

Credits: Thanks to Mike from Proline Audio & More

MA Audio HK898

2 x 300W @ 4 ohms
2 x 500W @ 2 ohms
1 x 1200W @ 4 ohms bridged
THD: <0.05%
Freq. Response: 20Hz ∼ 20kHz
S/N Ratio: >90dB
Fuse: 2 x 40A
Dimensions: 13" x 12.4" x 2.7" (33cm x 31.5cm x 6.9cm)

Credits:
Thanks to Scott Glick
Thanks to Mike from Proline Audio & More

MA Audio M1889i

1 x 400W @ 4 ohms
1 x 800W @ 2 ohms
S/N Ratio: 90dB
THD @ 4 ohm: < 0.05%
THD @ 2 ohm: < 0.1%
Channel Separation: 60dB
Fuse: 2 x 25A
Dimensions: 11.5" x 10.75" x 2" (29.2cm x 27.3cm x 5.1cm)

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Mac Audio MX 1000

2 x 50W @ 4 ohms (14.4V)
2 x 70W @ 2 ohms (14.4V)
1 x 150W @ 4 ohms bridged (14.4V)
Fuse: 20A

Credits: Thanks to Katja Vogel

Mac Audio Z2200

2 x 200W @ 4 ohms (14.4V)
2 x 300W @ 2 ohms (14.4V)
1 x 600W @ 4 ohms bridged (14.4V)
Fuse: 60A

Mac Audio Z4200

4 x 110W @ 4 ohms (14.4V)
4 x 140W @ 2 ohms (14.4V)
2 x 285W @ 4 ohms bridged (14.4V)
Fuse: 80A

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Macrom 42.05

2 x 65W RMS @ 4 Ohm
1 x 150W RMS @ 4 Ohm bridge

Credits: Marlboro_Man from hifi-forum.de

Macrom 42.07

Class A amplifier
2 x 85W @ 4 ohms
1 x 200W @ 4 ohms bridged
Fuse: 30A

Credits: Marlboro_Man from hifi-forum.de

Macrom 44.07

4 x 60W @ 4 ohms
4 x 75W @ 2 ohms
2 x 150W @ 4 ohms bridge

Macrom M1A.1000d

Output Power at 14.4V:
1 x 475W @ 4 ohms
1 x 900W @ 2 ohms

Same board as Carpower Wanted 1/800D

Credits: qwertz753 from hifi-forum.de

Macrom M2A.450

4 x 50W @ 4 ohms (14.4V)
4 x 70W @ 2 ohms (14.4V)
2 x 140W @ 4 ohms bridge

Macrom Syn Tech 4.075x

4 x 75 Watt RMS (4 Ohm)
4 x 150 Watt RMS (2 Ohm)
2 x 300 Watt RMS bridge
Fuse: 3 x 25A

Credits: Jachti from planetcarhifi.de

Macrom Synthesis 1000

2 x 125W @ 4 ohms (12V)
2 x 250W @ 2 ohms (12V)
2 x 500W @ 1 ohm (12V)
1 x 500W @ 4 ohm bridge (12V)
1 x 1000W @ 2 ohms bridge (12V)
Manufactured in 2000

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Magnat Classic 1000

2 x 335W @ 4 ohms
1 x 670W @ 4 ohms bridged
THD: 0.02%
S/N Ratio: 94dB
Freq. Response: 5Hz ∼ 80kHz (-3 dB)
Fuse: 3 x 30A
Dimensions: 27.6" x 11" x 2.2" (70cm x 28cm x 5.5cm)

Credits: Thanks to Grzegorz Chaber

Magnat Classic 240

2 x 120W @ 4 ohms
1 x 240W @ 4 ohms bridged

Magnat Classic 360

4 x 90W @ 4 ohms
2 x 180W @ 4 ohms bridged
Freq. Response: 5Hz ~ 50kHz
Fuse: 2 x 25A
Dimensions: 15.8" x 10" x 2.1" (40.2cm x 25.4cm x 5.4cm)
Weight: 10 lbs. (4.5 kg.)

Credits: Thanks to Jörg Stolz from Germany

Magnat Classic 360 GLADIATOR

4 x 90W @ 4 ohms
2 x 180W @ 4 ohms bridged
Freq. Response: 5Hz ~ 80kHz
Fuse: 2 x 20A
Dimensions: 13.8" x 10" x 2" (35cm x 25.3cm x 5.2cm)

Magnat Classic 480

4 x 60W @ 4 ohms
4 x 75W @ 2 ohms
2 x 150W @ 4 ohms bridge
Fuse: 2 x 20A

Magnat Phantom 4000

4 x 65W @ 4 ohms
4 x 95W @ 2 ohms
2 x 190W @ 4 ohms bridged
Fuse: 2 x 25A

Magnat Phantom Monoblock

1 x 400W @ 4 ohms (14.4V)
1 x 675W @ 2 ohms (14.4V)

Credits: Thanks to Chris Fox

Magnat Rapbull Classic 360

Output Power at 20Hz-20kHz nad THD <1%:
4 x 60W @ 4 ohms
4 x 75W @ 2 ohms
2 x 120W @ 4 ohms bridged
Output Power DIN 45324, 14,4V:
4 x 70W @ 4 ohms
4 x 90W @ 2 ohms
2 x 140W @ 4 ohms bridged
THD: 0.05% (1khz)
S/N Ratio: >105 dB
Channel Separation: >60 dB
Freq. Response: 5Hz ~ 80kHz (-3dB)
Fuse: 2 x 20A
Weight: 7.7 lb (3.5 kg)

Magnat RX 44

Output Power at 14.4V:
4 x 125W @ 4 ohms
4 x 160W @ 2 ohms
2 x 325W @ 4 ohms bridged
THD: <0.05% (1kHz)
S/N Ratio: >100 dBA
Stereo Separation: >60dB (1kHz)
Freq. Response: 5Hz ∼ 50kHz (-3dB)
Fuse: 2 x 40A
Dimensions: 13.8" x 10.3" x 2" (35cm x 26.1cm x 5cm)

Magnat Xcite 600

Output Power at 14.4V:
2 x 150W @ 4 ohms
2 x 175W @ 2 ohms
1 x 375W @ 4 ohms bridged
Fuse: 40A

Credits: Thanks to jd_oizo from Czech Republic

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Marantz 750A

1 x 90W @ 4 ohms (0.01% THD)
Load impedance: 1-16 ohms
Size: 5.6" x 5.6" x 1.5" (144mm x 144mm x 38mm)
Passband: 5Hz~120KHz positive and negative 0.1db

It has a feature called frequency and level enlarger.

Credits: Thanks to turboman from Taiwan

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Marathon US-50

Class A amplifier
2 x 25W @ 4 ohms (12.5V)
2 x 50W @ 2 ohms (12.5V)
1 x 50W @ 8 ohms bridge
1 x 100W @ 4 ohms bridge
Fuse: 30A

Marathon US-6150

Class A amplifier
6 x 25W @ 4 ohms (12.5V)
6 x 50W @ 2 ohms (12.5V)
3 x 50W @ 8 ohms bridge
3 x 100W @ 4 ohms bridge
Fuse: 3 x 25A

Credits: Phiber Optik from SoundDomain forums

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Massive Audio CA200

2 x 75W @ 4 ohms (12.5V - 0.005% THD)
2 x 150W @ 2 ohms (12.5V)
2 x 350W @ 2 ohms (14.5V)
2 x 450W @ 1 ohms (12.5V)
2 x 1050W @ 1 ohms (14.5V)
1 x 2100W @ 2 ohms bridged (14.5V)
Fuse: 3 x 40A

Credits: Phiber Optik from SoundDomain forums

Massive Audio D100X

Output Power at 12.5V:
1 x 100W @ 4 ohms
1 x 500W @ 2 ohms
1 x 1000W @ 1 ohm
THD: 0.08%
Freq. response (+0/-1 dB): 5Hz - 38kHz
S/N Ratio: >100dBA
Fuse: 2 x 40A
Dimensions: 11.8" x 9.8" x 2.4" (30cm x 25cm x 6.1cm)

Massive Audio P1500.1

1 x 600W @ 4 ohms (< 1% THD)
1 x 950W @ 2 ohms (< 1% THD)
1 x 1250W @ 1 ohm (< 1% THD)
1 x 1500W @ 1 ohm (14.4V)
Fuse: External 100A

Same board as:
. Branson X1500K
. SinusLive SL A-1500
. theloudest.com TL-1022

Credits: justonemoreamp eBay user

Massive Audio P3000.1

1 x 1800W @ 4 ohms (< 1% THD)
1 x 2680W @ 2 ohms (< 1% THD)
Max: 1 x 3000W @ 2 ohms (14.4V)
Fuse: External 200A
Lenght: 34.7in (88 cm)

Two P1500.1 internally bridged in the same chassis

Credits: justonemoreamp eBay user

Massive Audio P800.4

Output Power at 13.8V and <1% THD:
4 x 200W @ 4 ohms
2 x 400W @ 4 ohms bridged
Freq Response: 15Hz ~ 25kHz (-3dB)
Channel Separation: >80dB
Fuse: External 60A
Dimensions: 13.6" x 8.4" x 2.6" (34.5cm x 21.4cm x 6.6cm)

Massive Audio PA50

110w x 2 RMS / 500w Max
Stable down to 1 ohm stereo / 2 ohms mono

Massive Audio RS 40.4

4 x 40W @ 4 ohms (12.5V - 0.012% THD)
4 x 85W @ 4 ohms (13.8V)
4 x 250W @ 2 ohms (13.8V)
2 x 400W @ 4 ohms bridge
Fuse: 2 x 25A

Credits: diatribe from icixsound.com forums

Massive Audio RS-100

2 x 100W @ 4 ohms (12.5V - 0.012% THD)
2 x 220W @ 4 ohms (13.8V)
4 x 300W @ 2 ohms (13.8V)
1 x 1000W @ 4 ohms bridged
Fuse: 2 x 30A

Credits: dbEric from SoundIllusions.Net forum

Massive Audio RS-150

2 x 150W @ 4 ohms (12.5V - 0.012% THD)
2 x 320W @ 4 ohms (13.8V)
2 x 550W @ 2 ohms (13.8V)
1 x 1500W @ 4 ohms bridge
Fuse: 3 x 30A

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MB Quart QAA1000

1 x 1000W @ 4/2 ohms (1% THD)

Credits: Thanks to jimmyjam

MB Quart QAA4250

4 x 250W @ 4/2 ohms
1 x 500W @ 8/4 ohms bridge (rear only)
Fuse: External 150A

Credits: Thanks to jimmyjam

MB Quart RAA1000

1 x 250 Watts @ 4 ohms
1 x 500 Watts @ 2 ohms
1 x 1000 Watts @ 1 ohms
Fuse: 3 x 40A

MB Quart RAA2400

2 x 200 Watts @ 4 ohms (14.4V - < 1% THD+N)
2 x 400 Watts @ 2 ohms (14.4V - < 1% THD+N)
1 x 800 Watts @ 4 ohms bridge (14.4V - < 1% THD+N)
Fuse: 3 x 30A

MB Quart RAA4200

4 x 100 Watts @ 4 ohms (< 1% THD+N)
4 x 200 Watts @ 2 ohms (< 1% THD+N)
2 x 400 Watts @ 4 ohms bridge (< 1% THD+N)
Fuse: 3 x 30A

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McIntosh MC420

4 x 50W @ 4 ohms
Sold from 1994-1997

Credits: Thanks to nine76chris from diyAudio Forums

McIntosh MC431

4 x 100W @ 4 ohms
Sold from 1994-1997

McIntosh MC440

6 channels amplifier
4 x 50W + 2 x 100W @ 4 ohms
Sold from 1994-1997

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McMantom NRG 400

2 x 100W @ 4 ohms (14,4V)
2 x 141W @ 2 ohms (14,4V)
1 x 280W @ 4 ohms bridge (14,4V)

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MDS GTi F3002

2 x 300 W rms (4 ohm)
2 x 460 W rms (2 ohm)
1 x 960 W rms bridge (4 ohm)
Fuse: 3 x 30A

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MegaLoud VX-1600.1

Output Power at 13.8V:
1 x 400W @ 4 ohm
1 x 800W @ 2 ohm
1 x 1600W @ 1 ohm
Freq. Response: 10Hz ~ 250Hz (+/- 0.5dB)
S/N Ratio: >95dB
THD 1kHz: <0.1%
THD 20Hz ~ 20kHz: <1%
Damping Factor: >150
Fuse: 90A Breaker
Size: 20" x 10.5" x 2.25" (50.8cm x 26.7cm x 5.7cm)

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Memphis 16-MC1000D

MClass Series
1 x 300W @ 4 ohms (0.75% THD)
1 x 600W @ 2 ohms (1% THD)
1 x 1100W @ 1 ohm (1.2% THD)
S/N Ratio: >95dB
Freq. Response: 10Hz ∼ 650Hz (± 1dB)
Fuse: 2 x 40A
Dimensions: 13.4" x 6.5" x 2" (34cm x 16.5cm x 5.1cm)

Same board as Memphis 16-ST1000D

Credits: Minimum40 from SoundDomain forums

Memphis 16-MC1500D

MClass Series
1 x 750W @ 4 ohms (0.75% THD)
1 x 1500W @ 2 ohms (1% THD)
S/N Ratio: >100dB
Freq. Response: 10Hz ∼ 650Hz (± 1dB)
Fuse: 5 x 30A
Dimensions: 19" x 6.5" x 2" (48.3cm x 16.5cm x 5.1cm)

Same board as Memphis 16-ST1500D

Memphis 16-MC3004

4 x 75W @ 4 ohms
4 x 115W @ 2 ohms
2 x 230W @ 4 ohms bridge

Memphis 16-MC500D

1 x 250W @ 4 ohms
1 x 500W @ 2 ohms
Fuse: 2 x 25A

Memphis 16-PR1.5KD

1 x 750W @ 4 ohms (1.5% THD)
1 x 1500W @ 2 ohms

Credits: www.teamspl.it

Memphis 16-ST1000D

> Studio Series
1 x 300W @ 4 ohms (0.75% THD)
1 x 600W @ 2 ohms (1.0% THD)
1 x 1100W @ 1 ohm (1.2% THD)
S/N Ratio: >95dB
Freq. Response: 10Hz ∼ 650Hz (± 1dB)
Efficiency: 90%
Fuse: 2 x 40A
Dimensions: 13.4" x 6.5" x 2" (34cm x 16.5cm x 5.1cm)

Same board as Memphis 16-MC1000D

Memphis 16-ST1500D

Studio Series
1 x 750W @ 4 ohms (0.75% THD)
1 x 1500W @ 2 ohms (1% THD)
S/N Ratio: >100dB
Freq. Response: 10Hz ∼ 650Hz (± 1dB)
Efficiency: 90%
Fuse: 5 x 30A
Dimensions: 19" x 6.5" x 2" (48.3cm x 16.5cm x 5.1cm)

Same board as Memphis 16-MC1500D

Credits: Thanks to Marc Moran

Memphis AR-HC100

2 x 50W @ 4 ohms
2 x 100W @ 2 ohms
2 x 200W @ 1 ohm
2 x 400W @ .5 ohms
Fuse: 100A

Credits: hifi-forum.de

Memphis Belle (Fultron)

6 channel amplifier
4 x 75W + 2 x 150W @ 4 ohms
4 x 150W + 2 x 300W @ 2 ohms
2 x 300W + 1 x 600W @ 4 ohms bridged
Fuse: 4 x 30A

Manufactured in 1997. Fultron branded until Memphis Car Audio bought Fultron.

Credits: Thanks to Paschal Stephenson

Memphis Belle ST-1300D

4 x 75W + 1 x 300W @ 4 ohm
4 x 115W + 1 x 600W @ 2 ohm
1 x 1100W @ 1 ohm (subwoofer channel)
2 x 230W @ 4 ohm bridged (main channels)
Fuse: 6 x 30A

Memphis Mojo 16-MC2000D

1 x 1200 @ 4 ohms (13.8V)
1 x 2000 @ 2 ohms (13.8V)
1 x 2400 @ 2 ohms (15.5 V)

The board has similarities to the Directed 2400d.

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Mission Freeway

2 x 40W @ 4 ohm
2 x 50W @ 2 ohm
1 x 100W @ 4 ohm bridged
THD+N: <0.05% (20Hz ~ 20kHz, full power)
S/N Ratio: >90 dBA
Freq. Response: 4.8Hz ~ 70kHz (-3dB)
Max. Current Consumption: 25A
Fuse: 25A
Manufactured in 1996 (England)

Based on the Cyrus 2 domestic HI-FI amplifier.

Credits: Thanks to James Skeels

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MMATS 3000.1

2500 Wrms @ 1 ohm

Credits: dbEric's at soundillusions.net

MMATS 500.2

1 x 500W @ 2 ohms
Distortion: < 0.1% THD+n

MMATS D1500.2

1 x 1100W @ 2 ohms

Credits: redfred86 eBay user

MMATS D300HC

1 x 1200W @ 2 ohms
This amp was modded for 1800 RMS

Credits:
Alejandro from Pucara Audio
darbydon eBay user

MMATS DHCx2200.1

Output Power at 13.8V:
1 x 1400W @ 2 ohms
1 x 2200W @ 1 ohm
S/N Ratio -92db
Dimensions 15" x 9.25" x 2.25" (38.1cm x 23.5cm x 5.7cm)

Credits: Thanks to Cadre

MMATS LM2100

4 x 100w @ 4 ohms (0.05% THD+N)
4 x 200W @ 2 ohms
2 x 400W @ 4 ohms bridged
S/N Ratio: -105dB A weighted
Damping Factor @ 100Hz: >125

Credits: Thanks to Paul "PB"

MMATS LM2125

4 x 125w @ 4 ohms (0.05% THD+N)
4 x 250W @ 2 ohms
2 x 500W @ 4 ohms bridged
S/N Ratio: -105dB A weighted
Damping Factor @ 100Hz: >125

Credits: mbtung eBay user

MMATS LM4065

4 x 65w @ 4 ohms (0.05% THD+N)
4 x 130W @ 2 ohms
2 x 260W @ 4 ohms bridged
S/N Ratio: -105dB A weighted
Damping Factor @ 100Hz: >125

Credits: Thanks to Paul "PB"

MMATS SQ4070

4 x 70W @ 4 ohms
Not bridgeable or 2 ohms stable

MMATS SQ4150

4 x 150W @ 4 ohms
2 x 300W @ 4 ohms bridged
Distortion: <0.05% THD+N

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Mobile Authority 1000W

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Monitor 1 MK4.70

4 x 70W @ 4 ohms (0.04% THD)
4 x 100W @ 2 ohms (0.08% THD)
2 x 200W @ 4 ohms bridge
Fuse: 30A

Built in Modesto, Ca. by ARPA, same manufacturer as Zapco and Arc Audio

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Monolithic A 1001M

1 x 100W @ 4 ohms
1 x 200W @ 2 ohms
4 TO3 outputs
16 - 50A mosfets

Monolithic Gold 100

2 x 100W @ 4 ohms
Premium version of the PA-2000 with yellow anodized chassis in place of the black one.

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MTX Thunder 1000D

RMS Power at 12.5V:
1 x 500W @ 4 ohms (<0.5% THD)
1 x 1000W @ 2 ohms (<1% THD)
Dynamic Power at 14.4V (IHF-202):
1 x 850W @ 4 ohms
1 x 1500W @ 2 ohms
S/N Ratio: 100dBA
Damping Factor: >200
Freq. Response: 20Hz ∼ 200Hz
Fuse: External 150A
Dimensions: 14" x 9" x 2" (35.6cm x 22.8cm x 5cm)

Similar board to the MTX Thunder 81000D but without the compression circuit.

Credits: amp-junkie-like-me eBay user

MTX Black Gold BGA-2125

Output Power at 12V and 0.03% THD:
2 x 125W @ 4 ohms
2 x 250W @ 2 ohms
1 x 500W @ 4 ohms
Fuse: 50A
Manufactured in 1994

Credits:
Thank to Barry Corley

MTX Blue Thunder BTA 2100

Output Power at 12.5V:
2 x 100W @ 4 ohms
2 x 150W @ 2 ohms
1 x 300W @ 4 ohms bridged
Freq. Response: 20Hz 20kHz
THD+N: <0.05%
Damping factor: >100
S/N Ratio: >85
Dimensions 12" x 8.5" x 2.25" (30.5cm x 21.6cm x 5.7cm)
Manufactured in 1991

Made by Orion for MTX

Credits: jspeedracer76 eBay user

MTX Blue Thunder PRO 504

Output Power at 12V:
4 x 25W @ 4 ohms
4 x 50W @ 2 ohms
2 x 100W @ 4 ohms bridged
Fuse: 2 x 25A

Credits: Thanks to Daniel de Ferrariis

MTX Blue Thunder PRO 752

Output Power at 12.5V:
2 x 37.5W @ 4 ohms (<0.05% THD+N)
2 x 75W @ 2 ohms (<0.1% THD+N)
1 x 150W @ 4 ohms bridged (<0.1% THD+N)
S/N Ratio: >110dBA
Damping Factor: >200
Freq. Response: 20Hz ∼ 20kHz (±0.25dB)
Fuse: 30A

Credits: Thanks to Chris Doan

MTX Blue Thunder PRO50X4

4 x 25W @ 4 ohms (12V)
4 x 50W @ 2 ohms (12V)
2 x 100W @ 4 ohms bridged (12V)
Fuse: 2 x 25A

Credits: Thanks to Guy (go-guy-go eBay user)

MTX MXA6004

Output Power at 14.4V and ≤1% THD+N:
4 x 75W @ 4 ohms
4 x 150W @ 2 ohms
2 x 300W @ 4 ohms bridged
S/N Ratio: 80dBA
THD+N: <0.25% (ref: 1W output)
Fuse: 3 x 25A
Dimensions: 17.57" x 9.72" x 2.5" (44.6cm x 24.7cm x 6.35cm)

MTX MXA8001

1 x 400W @ 4 ohms (14.4V - < 1% THD+N)
1 x 800W @ 2 ohms (14.4V - < 1% THD+N)
Fuse: 3 x 30A

Same board as:
. Coustic 1600DB

MTX Road Thunder RT2200X

Output Power at 12.5V:
2 x 100W @ 4 ohms (<0.5% THD)
2 x 200W @ 2 ohms (<1% THD)
1 x 400W @ 4 ohms bridged (<1% THD)
S/N Ratio: 100dB A-Weighted
Damping Factor: >200
Freq. Response: 20 - 20KHz ?.25dB
Fuse: 2 x 30A
Dimensions: 8" x 9" x 2" (20cm x 22.8cm x 5cm)

Credits: Thanks to Simon Owen

MTX Road Thunder RT251D

1 x 125W @ 4 ohms
1 x 250W @ 2 ohms
Fuse: 25A

MTX Road Thunder RT2600

RMS Power at 12.5 Volts DC:
2 x 200W @ 4 ohms (<0.5% THD)
2 x 300W @ 2 ohms (<1% THD)
1 x 600W @ 4 ohms (<1% THD)
S/N Ratio: 100dB A-Weighted
Damping Factor: >200
Freq. Response: 20Hz - 20KHz ?.25dB
Fuse: 3 x 30A
Dimension: 12" x 9" x 2" (30.5cm x 22.8cm x 5cm)
Manufactured in 2000

MTX TA3404

Output Power at 14.4V and ≤1% THD+N (CEA-2006):
4 x 50W @ 4 ohm
4 x 100W @ 2 ohm
2 x 200W @ 4 ohm bridged
1 x 400W @ 2 ohm bridged (dual mono/low pass only)
THN+N (1 Watt): 0.25%
S/N Ratio (1 Watt): 78dB
Freq. Response: 20Hz ~ 20kHz (-3dB)
Fuse: 2 x 25A
Dimensions: 9-5/8" x 12-11/16" x 2-1/2" (24.5cm x 32.5cm x 6.5cm)

Credits:
Thanks to Daniel de Ferrariis

MTX TA91002

Output Power at 14.4V and ≤1% THD+N (CEA-2006):
2 x 250W @ 4 ohms
2 x 500W @ 2 ohms
2 x 750W @ 1 ohm
1 x 1000W @ 4 ohms bridged
1 x 1500W @ 2 ohms bridged
THN+N (1 Watt): 0.1%
S/N Ratio (1 Watt): 71dB
Dimensions: 9-5/8" x 24-11/16" x 2-1/2" (24.5cm x 62.5cm x 6.5cm)

MTX Terminator MTA 225

Output Power at 12.5V:
2 x 25W @ 4 ohms (0.02% THD)
2 x 50W @ 2 ohms
2 x 100W @ 1 ohm
2 x 200W @ ? ohm
1 x 100W @ 4 ohms bridged
1 x 200W @ 2 ohms bridged
1 x 400W @ 1 ohm bridged

High Current Amplifier built by PPI
Very similar to the ProMos 25

Credits: windstyler eBay user

MTX Terminator MTA 250

Output Power at 12.5V:
2 x 50W @ 4 ohms (0.02% THD)
2 x 100W @ 2 ohms
2 x 200W @ 1 ohm
2 x 400W @ ? ohm
1 x 200W @ 4 ohms bridged
1 x 400W @ 2 ohms bridged
1 x 800W @ 1 ohm bridged

High Current Amplifier built by PPI
Very similar to the ProMos 50

MTX Thunder 1004

4 x 90W @ 4 ohms (12.5V 0.3% THD)
4 x 180W @ 2 ohms (12.5V 0.3% THD)
2 x 360W @ 4 ohms bridge (12.5V 0.3% THD)
Fuse: External 150A

Credits: Thanks to Captain Howdy

MTX Thunder 2300x

Output Power at 12.5V:
2 x 150W @ 4 ohms (0.05% THD+N)
2 x 300W @ 2 ohms (0.1% THD+N)
1 x 600W @ 4 ohms bridged (0.1% THD+N)
Dynamic: 1 x 750W @ 4 ohms (14.4V)

MTX Thunder 250D

RMS Power at 12.5V:
1 x 125W @ 4 ohms (0.5% THD+N)
1 x 250W @ 2 ohms (1% THD+N)
Dynamic Power at 14.4V (IHF-202):
1 x 200W @ 4 ohms
1 x 350W @ 2 ohms
S/N Ratio: 90dBA
Damping Factor: >200
Freq. Response: 20Hz ∼ 200Hz
Fuse: External 2 x 20A
Dimensions: 7" x 9" x 2" (17.8cm x 22.8cm x 5cm)

MTX Thunder 250x

Output Power at 12.5V:
2 x 25W @ 4 ohms (<0.05% THD+N)
2 x 50W @ 2 ohms (<0.1% THD+N)
1 x 100W @ 4 ohms bridged (<0.1% THD+N)
S/N Ratio: >110dBA
Damping Factor: >200
Fuse: 25A
Dimensions: 9" x 8" x 2" (22.8cm x 20.3cm x 5cm)

Credits: Thanks to Chris Doan

MTX Thunder 280

Output Power at 12.5V (20Hz ~ 20kHz):
2 x 40W @ 4 ohm (0.05% THD)
2 x 80W @ 2 ohm (0.1% THD)
2 x 160W @ 4 ohm bridged (0.1% THD)
Fuse: 30A

Credits: Thanks to James Skeels

MTX Thunder 302

Output Power at 12.5V:
2 x 75W @ 4 ohms (0.05% THD+N)
2 x 150W @ 4 ohms (0.1% THD+N)
1 x 300W @ 4 ohms bridged (0.1% THD+N)
Fuse: 2 x 30A
S/N Ratio: 110dB A-Weighted
Dimensions: 9 x 9 x 2 (22.8cm x 22.8cm x 5cm)

Credits: amandanicole0925 eBay user

MTX Thunder 342

2 x 85 watts RMS @ 4 ohms
1 x 340 watts RMS bridged @ 4 ohms

MTX Thunder 404

Output Power at 12.5V (<1% THD):
4 x 35W @ 4 ohms
4 x 70W @ 2 ohms
2 x 140W @ 4 ohms bridged
S/N Ratio: ≥100dBA
Damping Factor: >200
Freq. Response: 20Hz ∼ 20kHz (±0.5dB)
Dimensions: 11.5" x 9.75" x 2.1" (29.3cm x 24.8cm x 5.3cm)

MTX Thunder 4122

30 x 2 @ 4 ohms RMS @ 12.5v
50 x 2 @ 4 ohms RMS @ 14.4v
60 x 2 @ 2 ohms RMS @ 12.5v
80 x 2 @ 2 ohms RMS @ 14.4v
120 x 1 @ 4 ohms RMS @ 12.5v
200 x 1 @ 4 ohms RMS @ 14.4v
Fuse: 20A

MTX Thunder 4202

2 x 50W RMS @ 4 ohms
2 x 100W RMS @ 2 ohms
1 x 200W RMS @ 4 ohms bridge
Fuse: 30A

Credits: evilra from CarDomain

MTX Thunder 500D

RMS Power at 12.5V:
1 x 250W @ 4 ohms (<0.5% THD+N)
1 x 500W @ 2 ohms (<1% THD+N)
Dynamic Power at 14.4V (IHF-202):
1 x 450W @ 4 ohms
1 x 775W @ 2 ohms
S/N Ratio: 100dBA
Damping Factor: >200
Freq. Response: 20Hz ∼ 200Hz
Fuse: 3 x 25A
Dimensions: 9" x 9" x 2" (22.8cm x 22.8cm x 5cm)