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[Inspector #20]

Lol I think the loudest I got up to was 118.5db, measured. That was with the Mode Four cranked into a single MF400B cab. Supposedly they can go further but that was my readings and it was devastating.

Side note, when I got the amp, I actually bought two of those cabs and ran it in a full stack setup. The dealer sold me them but the amp IS NOT set up for two of those cabs because of an impedance deficiency ( you have to have the MF280 cabs for that). Well, blew the first amp up 15 mins after bringing it home. Took it back, they gave me another and I blew THAT one up after 3 months. Marshall actually repaired it for me, not knowing what I was doing and neither did I really lol but they modded it to accept the cabs and I ran it full stack for a long time after with no issues.

Anywho, cranked it with the solo boost all the way up once I got it back. Actually knocked the vinyl siding loose on the house that was firmly attached, where the amp was against the wall. Never measured dB but I imagine it was far worse than 118.5 lol

Tell me more about your Mode 4.

 

[Headache]

Lol I think the loudest I got up to was 118.5db, measured. That was with the Mode Four cranked into a single MF400B cab. Supposedly they can go further but that was my readings and it was devastating.

Side note, when I got the amp, I actually bought two of those cabs and ran it in a full stack setup. The dealer sold me them but the amp IS NOT set up for two of those cabs because of an impedance deficiency ( you have to have the MF280 cabs for that). Well, blew the first amp up 15 mins after bringing it home. Took it back, they gave me another and I blew THAT one up after 3 months. Marshall actually repaired it for me, not knowing what I was doing and neither did I really lol but they modded it to accept the cabs and I ran it full stack for a long time after with no issues.

Anywho, cranked it with the solo boost all the way up once I got it back. Actually knocked the vinyl siding loose on the house that was firmly attached, where the amp was against the wall. Never measured dB but I imagine it was far worse than 118.5 lol

Oh the Mode Four flat cranks man!
And they are also prone to blowing up!
Kind of like race cars.....
I blew one up one time as well.
I've been pretty easy on the one I have now.

They get stupid loud real quick!

 

[Inspector #20]

Oh the Mode Four flat cranks man!
And they are also prone to blowing up!
Kind of like race cars.....
I blew one up one time as well.
I've been pretty easy on the one I have now.

They get stupid loud real quick!

Really??? I wonder why??? What fails on them???

I was concerned that running my 1993 Marshall Valvestate Bi-Chorus 200 - literally with all volumes on '10' and controlling the volume with the Boss FV-30L in the FX loop - wss gonna blow it up, but its been run that way for 24 total hours of rehearsals with zero issues.

 

[Clockworkmike]

Really??? I wonder why??? What fails on them???

I was concerned that running my 1993 Marshall Valvestate Bi-Chorus 200 - literally with all volumes on '10' and controlling the volume with the Boss FV-30L in the FX loop - wss gonna blow it up, but its been run that way for 24 total hours of rehearsals with zero issues.

They said mine was screen resistors blown, thus frying the transformer but that made sense considering I was running two 8ohm cabs in 16 ohm only slots lol but I heard the first batch were finicky as hell and often wound up back in the shop

 

[Clockworkmike]

Tell me more about your Mode 4.

Whatcha wanna know, bro? I can try to help ya!

 

[Headache]

Really??? I wonder why??? What fails on them???

I was concerned that running my 1993 Marshall Valvestate Bi-Chorus 200 - literally with all volumes on '10' and controlling the volume with the Boss FV-30L in the FX loop - wss gonna blow it up, but its been run that way for 24 total hours of rehearsals with zero issues.

From what I've learned, there is an issue with keeping the chips cool. Tube preamp and Solid State output. The chips get hot and if anything really fails, those chips will blow. That's what my first one did.

I've heard they are picky about speaker impedance to the point where if you swap to a different cabinet you have to let the whole board die out before attempting it.

Now my second Mode Four has been stellar, never a hiccup whatsoever.

2 amps in one really, each amp has 2 modes each with 3 voices....it's very versatile indeed.
I love mine to death, it's what I gig with.

 

[Inspector #20]

Oh the Mode Four flat cranks man!
And they are also prone to blowing up!
Kind of like race cars.....
I blew one up one time as well.
I've been pretty easy on the one I have now.

They get stupid loud real quick!

Really??? I wonder why??? What fails on them???

I was concerned that running my 1993 Marshall Valvestate Bi-Chorus 200 - literally with all volumes on '10' and controlling the volume with the Boss FV-30L in the FX loop - wss gonna blow it up, but its been run that way for 24 total hours of rehearsals with zero issues.

From what I've learned, there is an issue with keeping the chips cool. Tube preamp and Solid State output. The chips get hot and if anything really fails, those chips will blow. That's what my first one did.

I've heard they are picky about speaker impedance to the point where if you swap to a different cabinet you have to let the whole board die out before attempting it.

Now my second Mode Four has been stellar, never a hiccup whatsoever.

2 amps in one really, each amp has 2 modes each with 3 voices....it's very versatile indeed.
I love mine to death, it's what I gig with.

Interesting!!!!!

 

[Clockworkmike]

From what I've learned, there is an issue with keeping the chips cool. Tube preamp and Solid State output. The chips get hot and if anything really fails, those chips will blow. That's what my first one did.

I've heard they are picky about speaker impedance to the point where if you swap to a different cabinet you have to let the whole board die out before attempting it.

Now my second Mode Four has been stellar, never a hiccup whatsoever.

2 amps in one really, each amp has 2 modes each with 3 voices....it's very versatile indeed.
I love mine to death, it's what I gig with.

Very versatile machine!

But Yeah @Inspector #20 , like @Headache hit on, 2 independent amps each with a split channel, so somewhat of a 4 amp setup ( think like a poor man's JVM410 in theory but scaled down). Amp 1 Channel 1 is modeled after the Plexi section, Amp 1 Channel 2 is modeled after a hotrod JCM800. Amp 2 Channel 3 is more of a modern voice crunch, Amp 2 Channel 4 is full on modern hi gain fixed more into detuning.

It's in the vein of the Valve state, having a hybrid design of a Solidstate power amp and 2 ECC83s in the preamp ( one for each amp section). Each amp section front panel has its own onboard digital reverb control, FX loop level control, scoop switch that cuts out mids,volume, gain, and 3 band EQ but Amp 2 also has the added Tone Matrix knob that has 3 different voicings that attack the midrange ( kind of either a midrange cut or a midrange boost depending on how you use it).

Both amps have a shared master volume, presence, resonance control and a solo boost control that you can dial up to a 3db boost that's engaged via the foot controller. Also has a tuner switch that mutes the amps output. Rear panel has an emulated line out, FX loop and 2 speaker outputs that can work with a few configurations: a single 16 ohm cab, a single 8 ohm cab or 2 16 ohm cabs only. They originally had 2 choices: the MF280 A/B cabs with V30s or the MF400A/B cabs with K100s. Unfortunately, it could only power the MF400 cab in a half stack due to the impedance or a full stack MF280 configuration. But, there's ways around this lol

 

[Inspector #20]

Oh the Mode Four flat cranks man!
And they are also prone to blowing up!
Kind of like race cars.....
I blew one up one time as well.
I've been pretty easy on the one I have now.

They get stupid loud real quick!

Really??? I wonder why??? What fails on them???

I was concerned that running my 1993 Marshall Valvestate Bi-Chorus 200 - literally with all volumes on '10' and controlling the volume with the Boss FV-30L in the FX loop - wss gonna blow it up, but its been run that way for 24 total hours of rehearsals with zero issues.

From what I've learned, there is an issue with keeping the chips cool. Tube preamp and Solid State output. The chips get hot and if anything really fails, those chips will blow. That's what my first one did.

I've heard they are picky about speaker impedance to the point where if you swap to a different cabinet you have to let the whole board die out before attempting it.

Now my second Mode Four has been stellar, never a hiccup whatsoever.

2 amps in one really, each amp has 2 modes each with 3 voices....it's very versatile indeed.
I love mine to death, it's what I gig with.

Interesting!!!!!

Very versatile machine!

But Yeah @Inspector #20 , like @Headache hit on, 2 independent amps each with a split channel, so somewhat of a 4 amp setup ( think like a poor man's JVM410 in theory but scaled down). Amp 1 Channel 1 is modeled after the Plexi section, Amp 1 Channel 2 is modeled after a hotrod JCM800. Amp 2 Channel 3 is more of a modern voice crunch, Amp 2 Channel 4 is full on modern hi gain fixed more into detuning.

It's in the vein of the Valve state, having a hybrid design of a Solidstate power amp and 2 ECC83s in the preamp ( one for each amp section). Each amp section front panel has its own onboard digital reverb control, FX loop level control, scoop switch that cuts out mids,volume, gain, and 3 band EQ but Amp 2 also has the added Tone Matrix knob that has 3 different voicings that attack the midrange ( kind of either a midrange cut or a midrange boost depending on how you use it).

Both amps have a shared master volume, presence, resonance control and a solo boost control that you can dial up to a 3db boost that's engaged via the foot controller. Also has a tuner switch that mutes the amps output. Rear panel has an emulated line out, FX loop and 2 speaker outputs that can work with a few configurations: a single 16 ohm cab, a single 8 ohm cab or 2 16 ohm cabs only. They originally had 2 choices: the MF280 A/B cabs with V30s or the MF400A/B cabs with K100s. Unfortunately, it could only power the MF400 cab in a half stack due to the impedance or a full stack MF280 configuration. But, there's ways around this lol

It actually sounds great!!!

My 8200 is set thusly;

Master Volume - Full
Channel Volume - Full
Bass - 3pm
Mids - 3pm
Treb - 3pm
Contour - 7pm (low mid frequency scoop)

Volume is controlled by a Boss FV-30L low impedance keyboard pedal through the FX loop.

My bandmates tell me its the only time they've felt a percussive, bass-like thump from a guitar with a searing, mid-range snarl that actually sounds like two guitars playing at once.