Nice Vintage amps for sale

Just found a nice listing of vintage marshall amps for sale that i though i would share, here the link: http://marshall-amps-guitar.com

JCM800 4210

The JCM800 4210 is essentially a combo amp of the orginal JCM800 head, made by Marshall.
This amp currently runs all on tubes with marshall's DFX line, ending with celstion speakers. It has master volume, presence and reverb controls. There is also an effects loop with a knob that controls how much of the effect is present. The distortion is very warm and bright. The JCM800 is really a smaller and more affordable version of the JCM800 head which could range in price of $2,000 USD.

Marshall's solid states

hile renowned for their valve guitar amps, Marshall produces and sells a large amount of solid state and bass equipment. Marshall's Valvestate amplifiers were at the time seen as evolutionary, as they contained a hybrid of valve and solid state technology, to provide a modicum of "true" valve tone, along with transistor reliability and ease of maintenance. Currently named the "AVT series", there are a number of different models, all of which are cheaper than their all-valve counterparts. It is Marshall's current line of "hybrid" amplifier, featuring a 12AX7 preamp tube employed in the preamp (to "warm up" the signal) as well as solid state components, with a solid-state power amp. source: http://marshall-amps-guitar.com/solidstate

Marshall MG250DFX Stereo Combo Amp

This 120-watt 2-channel guitar amp features digital effects, digital reverb, FX loop, and FDD technology that accurately mimics the way an all-valve amp interacts with a loudspeaker thus expanding tonal possibilities.

• A compact gig rig with a big Marshall tone
• Delivers a dynamic yet toneful punch
• 2x50W stereo power
• 2 - 12" speakers
• 2 channels (footswitchable)
• Digital effects including reverb, delay, chorus, and flange
• FDD (Frequency Dependent Dampening)
• CD ins, plus emulated line out, and emulated headphone jacks
• 30"W x 24"H x 15"D
• 48.5 lbs.

http://marshall-amps-guitar.com/
For all those who wrote in about cooling fan problems on this model amp, I had the same thing happen as most of you - fan whining at startup, some weird static-y type noise a couple of times through the speakers; bop the back of it and the fan would stabilize, noise go away, etc.Like some who wrote in, I was thinking of disconnecting the idiot thing, figuring why would you need a fan on a solid-state amp anyway?!?! Finally, when it started acting up during a church service in front of 300 people, I decided it had to be changed. I had an amp-tech friend of mine change it out, and he gave me some insight as to why a fan is even there. Apparently it's mounted over a device (possibly a processor or some type of heatsink - not sure) that generates a lot of heat and the fan is there to pull the heat away from it, just like the heat sink mounted over a processor in a computer.Two good things for you to know about the fan:1) Don't disconnect it or take it out and leave it out - Marshall put it in there for a reason.2) When replacing it, any general computer fan seems to fit okay. My friend pulled a fan out of an old computer he had and changed it out and said it fit just fine (although he had to splice the connector from the original fan onto the new fan - no big deal). This model amp seems to be a decent one overall, just the fan bumming a lot of people out. If the fan starts acting up in your amp, do yourself a favor - get a replacement fan (new ones are around $5 at most computer stores); take out the piece of garbage Marshall installed; put your new fan in. You should have no more problems for awhile with your amp (we all hope not anyway).Hope this helps,May God bless you and yours.

Marshall MG100HDFX Slant Cab Half Stack

The affordable halfstack includes the 100-watt 2-channel amp head and the 120-watt speaker cab with FDD and 4 - 12" custom-voiced Marshall/Celestion speakers.

• The MG100HDFX:
• Big Marshall tone
• Delivers a dynamic yet toneful punch
• 100W power
• 2 channels (footswitchable)
• Digital effects including reverb, delay, chorus, and flange
• FDD (Frequency Dependent Dampening)
• CD ins, plus emulated line out, and emulated headphone jacks
• 25"W x 14"H x 12"D
• 39 lbs.
• The MG412:
• 4 - 12" custom-voiced Marshall/Celestion speakers
• 8 ohms
• Handles 120 watts

This is a great amp right from when you get it. This is an excellent amp on clean and dirty channels. Excellent for recording and playing gigs, even huge gigs if you mic it. Overall a solid amp and I would recommend it to anyone looking for a genuine Marshall.
- http://marshall-amps-guitar.com/

Mods On A Marshall 3005 lead 12

Start by swapping op-amps, you can use all the op-amps that are used with Tubescreamers and they can all be found on ebay,.
Change the pots to mil spec as the replacements have a life of about 5 years. I use 3 turn pots that let me dial in the tone allot more precise. Same exact amount of resistance on the eq just it now takes 3 turns from 0-10, I use my ear to more finely dial it in where I want.
I wire the line outs to an American made Iron core transformer that knocks all signals down to 150 ohm. balanced out and I add the XLR on the back. This makes a world of difference in the amount of hum I get when I use the XLR to go into a DAW. Those are the beginner mods I have been doing for 20 years on these amps, if you want to move on to pro mods you can change the EQ by varying the pot values and you can always change the filter caps in the power supply section to be on the safe side, since they may be from 1985. The jacks need to be changed on older units and again using the same jacks they used is going to have a very definite life span, I would venture into using some high quality panel mount stuff and mount the pots to the board with wire so you can float the board in the chassis and use any replacement parts you want as opposed to being stuck with specialized PC board mounted NOS parts. I have seen the same pot values used on almost all the amps made and I tend to think they had been chosen on the lines of what the factory had tons of and not what the circuit warranted. Then again I could be a little crazy from playing loud guitar all my life, I am not by any means a trained electronics engineer, I am just a tinkerer.
My short list of favorite op-amps:
TI MC1458p (The original)
LF353n (a higher quality amp that some people like)
RC4558p (typcal TS type op-amp but purists want the JRC only.
JRC4558p (the original TS-808 amp)
http://marshall-amps-guitar.com/