RM100M Review

The RM100 is both traditional and modern technology rolled into one amplifier. First, you have 3 independent modular channels that can be loaded with your choice and combination of the available tube preamp modules. Load each channel with a preamp tone that fits only your needs with the ability to expand your arsenal anytime a new tone is needed.

Features:	9
Sound:	9
Reliability:	5.5
Impression:	8.5
Overall rating:	8
Users rating:	7.4
Comments:	22

overall: 8

Featured review by: ashish_2903, on february 08, 2008

Purchased from: EbayThe

Features: The Randall RM100 is an all-tube head and is part of the Modular Tube Series line of heads which have been in production for a while now I think, and is now making a huge comeback by endorsing leagendary guitar heroes such as Kirk Hammett and George Lynch. In my opinion, this is the ultimate personalised amp commercially available. To explain it to people Who have never seen the beast, the head is basically like a really heavy (32kgs!!! That's 70lbs for all you non-conformists) Nintendo 64. I say this because it has 3 slots which allow you to plug in these neat little modules (up to 13 different types) so that you can ultimately create your ultimate 3-channel rig (kinda like the Nintendos we had as kids). Each of these modules aim to model a number of different popular amps by incorporating the internal circuitry in these hot-swappable modules. Each uses 2 12AX7s to generate that warm tube sound. I got mine off Ebay from Brisbane and came with the Recto, 1086 and Modern modules preloaded. A Brand New one costs about AUD$3700 loaded with 3 stock modules. The head has a metal grill, indicated by the M at the end of RM 100M, and this model comes with 4 Ruby EL34s power tubes. And get this: with 3 modules in your head, you have at your disposal a total of 13 tubes, I.e. 4 EL34s and 9 12AX7s!

It also arrived with the MIDI footswich which allows you to hook your head up to an external effects pedal via the MIDI thru and quite easily kick off your channels with whatever effects you want on each channel. If MIDI is not your thing for effects, this head comes with a series and parallel effect loop located on the back of the head. An Effects knob on the front helps blend the wet and dry signals of the parallel loop as you like. Also, each loop uses a 12AX7 preamp tube to warm up the sound before hitting the modules. In addition, there is a 12AX7 at the guitar input side which helps warm the line coming in. If anyone is looking to get this head from somewhere overseas and it's cheaper, do it! The head comes with a variable voltage selector to suit whichever country you're playing it in. Another cool feature of this amp, which is also what sets it apart is the the self-biasing section. Replacing a tube and biasing it yourself is dead easy: get a voltmeter and insert electrodes into the test points available on the back of the head, adjust bias using a flathead screwdriver to the desired voltage. And presto! that's it! I am not kidding. You don't really want to be crawling through your head biasing tubes and touching all sorts of livewires if you're as heavy-handed as I am.

It has tube failure lights that come on when a tube fails, so you can swap it out in between long set rests. Each tube has an associated SLO-BLO 250mA fuse connected to it which if it Burns out, will pop out for easy replacement. Never again will you need to send your head into the shops for a tube change. And maintaining the tubes in top condition can be done in a matter of minutes. Swap tubes as you like, e.g. go from EL34s to E34Ls, 6L6s or even KT88s. Whatever you want; swap till your broke or until you rip out a tube socket. Then you're in trouble. From the serial number at the bottom right of the back of the head, I believe mine was manufactured in May 04', but then I could be reading it totally wrong. Either way though, this head is amazing. Wish this thing came with reverb, which is why I gave it a 9 instead of a 10. Another contribution to the 9, the price! Can't get an all tube amp like this for this kind of $$$. At 100 Watts, this thing is loud. 100 may not sound like a lot, but this is not a solid-state amp. I'm no scientist, but I think 100 W on a tube amp is way louder than 100 W on a SS. Think it has something to do with wattage describing power output for some, and others describing it's conversion to actual decibels. It has all the volume you could ever need, and the more you crank it, the more my tubes compress the output. The head comes covered in tolex, and has recessed, foldable handles at the side to lug around this monster. The handles are really hardy too! // 9

Sound: As with any tube amp, it sounds really thin and unresponsive at low volumes. But that's not why you get an all-tube beast do you? As you crank the master volume, a lot of the character of these individual modules come out. The pick attack response of each module is significantly different too. I use an ESP LTD EX-400 w/ Diamond plate and an Ibanez RGT42 on stage. The ESP has EMG 81/60s in it, and the body shape makes it really middy sounding. But it's perfect for playing death metal, thrash and everything high-gain. My favourite module for rhythms for now seems to be the 1086, I.e. the Dan Donegan from Disturbed signature module. Think Killswitch Engage type rhytms tone, which is really crunchy yet nicely compressed. For leads, the Modern does the trick; searing high leads depending on the guitar/pickups you use.

For some reason though, the Recto module just sounds too muffled and not really usable. I've since used it to play cleans by turning the gain way down and cranking the level way up. But again, this amp is not only for metal. The remaining modules on the market range from the Blackface, Tweed, Super Lead, XTC, Ultra, Ultra XL, Brahma, and many more. Get whatever it is you think will best suit your individual music genres. The amp is noisy, as with most Randalls. A bit of ambiant noise, but it's nothing a noise gate wont take out. I don't use effects by the way, so I just bear with the ambiant white noise. The amp has Density and Presence knobs on the front which control overall bass and high-end levels. Turning these seems to have an almost logarithmic response on the output. I haven't used it for recording, so I can't comment there. One thing to note is that this head comes with a cooling fan which is a bit noisy, so if you are going to record using a mic, put the head in another room and run a long speaker lead from it to the cabinet. Down the line I might get an XTC (based on the high-gain Bogner) and a Blackface (based on the Fender Twin). But for the music we are writing, the clean channel isn't too imperative. // 8

Reliability & Durability: From what I've read online, this amp seems to be riddled with problems, from rabid blowing fuses, dodgy solder joints and what not. I haven't had a problem yet, but when it does come up, I'll post here again. I still get my drummer to bring his Marshall Valvestate amp just in case the MTS meltsdown. I guess if you follow the rule of thumb with tube-amps, I.e. run on standby for 5mins before playing, and cool down on standby after, your tubes should last, and you won't risk burning a fuse. Also, don't run the head without a speaker lead connecting it. Also, been reading lots of the Bruce Egnater forums, and apparently swapping the modules while the thing is on, or even on standby is a bad idea. Best to turn it off, swap cartriges, then turn back on. Again, like a Nintendo 64. // 6

Impression: For melodic death metal, the 1086 and Modern modules get the job done, with stunning warm tube tone. Doesn't compress as much as an Engl, Framus, Mesa or Peavey, but sometimes you wonder when too much compression and gain is just over the top. You want your tone to cut through and not turn into static mush in the background of a 5-piece metal band. I've been playing for about 8 years now (not long... I know), but its been a real learning experience for me thus far. Before this, my amp was a 2watt Roland Microcube, since I didn't have a band then. Now that the gigs are become more frequent, and venues bigger, it was time to set my sound apart. I got a Randall 412-XC cab for this, which comes with Celestion seventy80 speakers, so its not top notch. If you can afford it, get the XL series of cabs to match this head since those cabs have Vintage '30s. If this stolen, I'd hunt him down and pummell him with the 32 kilo head. Then I'd get back into my car and chase him for a few hours until he passes out. Then I'd release the hounds. My favourite feature would have to be the price, and the fact that it's all tube. Wish it were lighter, less bulky, had pilot lights under the tubes and came with reverb, it would be perfect. But then again, its purpose built for the working musician, no bells or whistles. Just pure, all-tube tone. Lastly, don't just read this review. Do your own research, read what others have to say about their experience with this amp. Responses are varied and complicated. They are not always good reviews, which is what helps you decide in the end. When in doubt Google it.
I decided to write this because I don't see many Randalls on stage here in Melbourne, and that is a crying shame. Rock on! // 9

overall: 8

Reviewed by: Moe., on april 17, 2008

Purchased from: Ebay.

Features: I'm unsure of which year the amp is made, although it's in very good condition and can't be too old. It's all tube, and has tube modules to replicate different amp tones. Wait, what? Tube modeling? Oh yeah! From the factory I think these amps are equipped with JJ El84's and 12ax7's. It features 3 channels which are interchangeable with any module of your choice, including the older 1 channel Egnater modules. It has a Bias point in the back, for anyone needing a quick Bias. And along with this it also has an LED for each Tube, to indicate whether there is a tube failure. I use a 3 button Randall footswitch which came with the amp for channel switching, which can be programmed in a minute. It also features a Midi through; for midi effects, a Parallel effects loop, A series effects loop, interchangeable voltage selector, and of course an impedance select Switch. That's just the back. The front features the Usual Standby and power Switch, a Density control, Effects level, Master level, and Presence. The Modules have a gain knob, Middle, bass, treble, and level/volume. With an added bright Switch on each one. I've found that the modules will need a little bit of tweaking over time for a perfect tone, but everything takes time. I'm very happy with all of the features. My only complaint is the missing reverb, but all of the other features makes up for it. // 9

Sound: The guitar I'm using right now is an Epiphone Les Paul Custom, with stock pickups. Due to the modules that can be changed over with the amp, it's very versatile; Which is just what I need due to the constant change in genre enjoyment. It's good for a lot. I've gotten a sound close to Metallica's 'seek and destroy' with the XTC module. A great crunch sound for punk and blues with the Plexi module. And a warm sparkling clean tone for the blackface module. The amp isn't always noisy, but can be. The most noise from it is the fan in the back, but it's un-noticeable while playing. The clean channel can get distorted on a high volume level also, but I don't tend to push it that far. And of course, being a Randall, The distortion is brutal when needed. You can also purchase a little mod kit for the modules. With a replacement of one little component behind the gain knob of each module you can get a tighter bottom end with more pick attack, or can loosen it if wanted. // 10

Reliability & Durability: Not sure, haven't had it for long. But it is well built, and I'm not expecting any problems. It looks to be built in a tank, and is definitely gig worthy; But like everything else, it may need to have a back up taken for gigs. From what I understand the amp hasn't broken down either. A tube change will need to be undertaken though. // 5

Impression: The styles of music I play range from anything, blues, metal, punk, rock, jazz, and anything in between. I've found this Amp to be a good match to all of those styles with a little bit of tweaking. If I could've asked any questions about this, it would've been about a reverb pedal. The amp is completely perfect to my ears. If it were lost or stolen, I'd buy one of these in a second. Out of everything on this amp, The main thing I love is the versatility and choice. I haven't found anything that makes me hate it. I decided not to compared this amp to many, as it's in a category of its own. If I had to compare it to something, it would be many amps rolled into one. If you don't have the intent to buy one of these, I suggest at least trying one. Just let yourself be the judge, and I'm sure you'll be pleased. // 8

Comments

[Raaaaar]

I was going to get this but got a cheap v3 instead. Great amps but my concern would be when Randall make the amp obsolete like they have done before it will be difficult to get support and they will stop making replacement modules.

[led,rainsong]

are the modules digital or like different tubes?

[InanezGuitars44]

each preamp module had 2 preamp tubes in it, and the actually amp has tubes in it. so nothing here id digital. its like REAL modeling lol

[ashish_2903]

InanezGuitars44 wrote:

each preamp module had 2 preamp tubes in it, and the actually amp has tubes in it. so nothing here id digital. its like REAL modeling lol

Absolutely. Each module comes loaded with 2 12AX7 preamp tubes, and this is what is used to give you that warm, tube compression sound. The circuitry is what is used to model the different amplifiers. So basically you're getting a modelling amp in the form of individual modules with no digital processing, e.g Line6 or the PodXT.

Also, a little erratum to my earlier review. I pulled out the preamp tubes in my Recto module and replaced them with a matched pair of 12AX7s, and guess what? This module now puts the Modern module to shame! The 1086 is still my main rhythm tone, but now the Recto is my lead channel. But then again, once in a while, the Recto tone is just so chunky, that in some venues, I'll just use that as rhythm and lead.

Lastly, you might consider pulling out 2 of the power tubes if playing in tiny venues, cos this thing is loud!

Cheers!

[ashish_2903]

Raaaaar wrote:

I was going to get this but got a cheap v3 instead. Great amps but my concern would be when Randall make the amp obsolete like they have done before it will be difficult to get support and they will stop making replacement modules.

There is no way Randall is going to be discontinuing this line of amps IMO. With new artists being endorsed by Randall MTS amps, e.g. Kirk Hammett, George Lynch, and the barrage of new modules coming up soon, I think its safe to buy this head.

Read stuff here if you need further convincing!
http://mtsforum.grailtone.com/

[iceberg]

i have had this amp for about 8 months, and this thing is a beast. i'm running Clean, Grail, and 1086 modules- a rectifier 4x12 Mesa cabinet, a rack mount noise gate/compressor/limiter/gate, and a rack mount effects processor w/ flange, reverb, delay and chorus. some sort of noise gate is a must with this amp because it produces some serious volume and substantial gain (with my modules anyway). but now i hear no gain his, no ground buzz, or unwanted distortion. Clean is very clean and full sounding and can get crunchy at high gain. the 1086 is sinister sounding-tight low end, excessive gain, but great response with the highs cutting right through the low end for great lead and rythym tones. also has an additional mid voicing switch that greatly alters the sound of that module. the grail module is pretty much the same as the 1086, but i find that everything is a little more pronounced. another feature that not many people know about is the ability to adjust the MV's that your power tubes are running at. all you need is a voltage meter that reads MV's and you can adjust how hot or cool your tubes are running. keep in mind this effects the life of your power tubes. and yes this amp is not an apartmentamp-VERY VERY VERY LOUD. the louder it is, the better it sounds. it's been known to drop pictures off the wall and rattle the salt shaker on the dining room table right off onto the floor. serious inquirers only on this amp. all together for everything i have, it ran me about $2800, but i am set for a long time. highly recommended!!!

[iTzMaTT]

Would you say this is better than the Line 6 Spider III 75W?

[ultimo101]

iTzMaTT wrote:

Would you say this is better than the Line 6 Spider III 75W?

lol wut?

[sweeppicker91']

a turd sandwich is better than a Line 6 Spider anything

[jumpmanhat]

you can get line 6 spider III 75W for $150 canadian on craigslist, and they are bought and solo often like that.

whereas Randalls bearly end up on craigslist, and i doubt that this amp ever will and if it does, it would go for a lot of money.

[ashish_2903]

iTzMaTT wrote:

Would you say this is better than the Line 6 Spider III 75W?

I've played the Line6 spider III, and I feel that in a live setting: metal drummer bashing away on the tubs and singer growling his throat sore, you're gonna need an amp with enough warmth and character to cut through the mix, and distinguish your tone from a second guitarists' one. If you play jazz or are a very varied cover band, then the Line6 might be for you, cos single note lines and blues soloing come out very nice when the spider is miked up. But bear in mind, if you find a decent 2nd hand MTS on sale, you will be paying that extra moolah not for the Randall name, but for that tube tone. I got my head for $1700 Autralian. With 13 module you can choose from, you can't really go wrong. Youtube has a couple of samples for preview.

See if there are any shops where you are from that will rent out equipment for shows, and see if you can borrow the MTS for a gig. Play that side by side with the Line6 and make your decision. Then again, what sounds good to me may not suit you.

[SeanHart213]

The full stack MTS deal is the most versatile package available for guitar players. Not only does Randall provide an amazing amp head with tons of switchable preamps with, gasp, REAL MODELLING (is there such a thing? yes there is!) but their cabinets also show off Vintage 30's or Eminence Legends (whichever you choose), military-grade construction AND my favorite cabinet feature ever, the MIC ELIMINATOR jack, which is one of the handiest studio tools since the line 6 pod

If you are dreaming of buying the overrated and overpriced Gibson Les Paul Sunburst and Marshall JCM Stack that your "guitar god" plays, think again. You're way better off with a Randall MTS stack and a custom guitar for the same price!

[slash_rocks2005]

i own the RM50 and i LOVE this amp, this is bout as customizable as it gets...

and this is the only REAL modelling amp i've seen lol

[GuitarPlayer716]

Very thorough review. Seems like these amps are hit or miss though. People either have tons of problems or no problems at all. I'd have to play one before I made a commitment to one.

[ashish_2903]

GuitarPlayer716 wrote:

Very thorough review. Seems like these amps are hit or miss though. People either have tons of problems or no problems at all. I'd have to play one before I made a commitment to one.

Yeah. To be in the latter group of lucky ppl, make sure when rolling your head around, you try to reduce the shock and shake to the unit, as alot of the joints/connections in the head are easy to detach (a feature of a really easy to repair/modify head), but as a trade-off, these spade connectors come loose if you jiggle em' around too much.
I try to carry the head using the side handles as much as possible before rolling it on the cab.

Cheers!

[HELLSHREDD]

My LINE6SPIDERVALVE is fantastic for inside my house jamming along to my favorite tunes & it sounds deadly , but i would dual rectify on stage no questions asked.

[ashish_2903]

I'd recommend staying away from the Modern module though. After changing both tubes in it and checking through all the electronics... this module just seems to be softer than my other 2 modules. Noticably softer.

And from what I read online, this is not the 1st module to do that. So maybe opt for XTC or UltraLead.

[ashish_2903]

Another addition to this growing review of the awesome RM100 amp.

Just got myself the Blackface module, which is modelled after the revered Fender Twin amp. It is basically a clean channel, but the tone is really warm and full; think Metallica's song Sanitarium for the intro and clean bits. Yeah... just like that with the neck pickup.

Since I play through an EMG 81/60 setup, I was torn between getting this or the KH-1 module, i.e. Kirk Hammets' signature module for clean tones. It is basically the same as the Blackface but modded to accomodate active pickups. It's about USD$50 more than the Blackface.

After playing through the Blackface, switching between my active pickups and passives, I think the difference in gain response is really negligible. Just roll down the gain a tad and turn up the level on the module, and all is good. Rock on peeps!

[dnamra13]

lol what did the reviewers pay for these things

[ashish_2903]

dnamra13 wrote:

lol what did the reviewers pay for these things

I paid $1700 Australian for the head, 2nd hand, immaculate condition for a champ in Queensland.

[mosherhamish]

damn these are too expensive preloaded
anyone know any alternative heads that are less cash but still good. 2 or more channels with a tone good for melodic death/thrash metal

[Shinozoku]

There's a 2 channel model :P Or you can just save up, or get your parents to split it with you on a birthday or something. I really want one of these heads, paired with a Vader cab...