Tech 21 SansAmp RPM

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Footswitchable Preamp with Parametric EQ, Variable Gain, Drive Control, Effects Loop, Active Tone Controls with Cut/Boost, Blend Control, 1U

Item ID: RPM

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A Feature-packed Preamp in a Single Rackspace!

The Tech 21 SansAmp RPM footswitchable preamp packs a ton of features into a single rackspace unit. Adapted from a pedal SansAmp unit, the versatile SansAmp RPM includes a preamp, an effects loop, semi-parametric EQ, Drive control, active bass, mid, and treble controls (with +/-12dB of boost/cut), and tube amp emulator circuitry. Now you can introduce gain and overdrive into the signal path without losing the clean punch of your bass sound (a handy feature for bassists who want to add some grit to their tone). Want some truly monsterous bass sounds? Try the SansAmp RPM.

Tech 21 SansAmp RPM Preamp at a Glance:

Functional and compact
Flexible signal control

Functional and compact
The SansAmp RPM bass preamp is feature-packed! Use the Drive control to adjust the overall amount of gain and overdrive. Active Bass and Treble controls cut or boost ±12dB, while Mid Shift is a parametric EQ control allowing you to select the center frequency of the Mid control. Its sweep ranges from 170 Hz to 3.0 kHz. Mid is also an active tone control, with a cut or boost of ±12dB.
Blend allows you to mix the direct instrument signal with SansAmp Tube Amplifier Emulation circuitry.
There's also an individual Level control for the XLR out to optimize your amp's output relative to the P.A. system.

Flexible signal control
Tech 21 was able to include several great connection options to the SansAmp RPM. Included is an effects loop with a Mix 50/50 switch to configure in series or parallel, 1/4" rear input and XLR output with selectable levels.
You also get a buffered uneffected XLR output to run a dry signal to a separate channel.
A footswitch input is built in to remotely engage the unit, and a footswitch output is added to chain and toggle between another SansAmp RPM or SansAmp RBI.

Tech 21 SansAmp RPM Preamp Features:

Drive adjusts the overall amount of gain and overdrive
Active Bass and Treble controls cut or boost ±12dB
Mid Shift is a parametric EQ control which allows you to select the center frequency of the Mid control
Mid is an active tone control, cut or boost ±12dB
Blend allows you to mix the direct instrument signal with SansAmp Tube Amplifier Emulation circuitry
Individual Level control for the XLR out to optimize your amp's output relative to the P.A. system
Effects Loop with Mix 50/50 switch to configure in series or parallel
1/4" rear input and XLR output with selectable levels
Buffered uneffected XLR output to run a dry signal to a separate channel
Footswitch input to engage unit
Footswitch output to chain and toggle between another SansAmp products

The Tech 21 SansAmp RPM puts great tones right in your rack!

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Reviews
based on 3 customer reviews

Can't be beat!

by Mark from St. Louis, MO
December 10, 2008
Music Background: Semi-Pro

The RPM is just an incredible unit. Looks like it would be complicated, but is not at all. Very intuitive to get great tones. Sweepable mids are the best - you can literally dial yourself into the mix... read more [+] and hear when you hit the magic spot. Worth its weight in gold. Been playing almost 30 years and never was so satisfied with anything in my amp chain as the RPM. close [-]

Excellent

by Rodrigo Lara from Sao Paulo, SP BRAZIL
July 16, 2008
Music Background: Hobbyist

If you (like me) are not willing to drag a 60-pound rig around and still sound good, you should give this rack a shot. Among the many good things I could say about it the best one by far is that it is... read more [+] really easy to get a good tone out of it with just a few tweaks. Already tested it with lots of amp heads (some pretty ugly sounding ones I should say) and I always can manage to get a good tone. The guys I play with noticed the difference immediately: first because I used to be the guy that took forever to get a usable tone, now I spend a minute or two to get it, second because the tone I get can really cut through the mix. The sweepable Mid control is a blessing!
It´s been 4 months now since I bought it and I can only say great things about it. Ok, this is not a SVT Classic rig, but it sure does not weigh as much and still can deliver a lot! close [-]

Incredible!

by Eric G. from St Louis, MO
December 31, 2007
Music Background: Bass Guitar

Been playing bass for 20+ years - I've own lots of amp & preamps, but nothing like this. I don't make that comment lightly. You owe it to yourself to give one of these a try. In all sincerity, it may ... read more [+]just be the biggest improvement to your tone you'll ever make. This preamp is the most dramatic improvement to my tone than anything I've ever tried in over 20 years. This unit replaced an Ampeg SVP-Pro all tube preamp. The SansAmp RPM just plain sounds better, and I don't mean by just a little - far & beyond better. You couldn't hand me the Ampeg back for free, I'd never use it again. What is equally amazing to me is that just between the 3 bands of EQ (bass, treble, mid w/mid-sweep) I can get such an amazing variety of tones. This is coming from a guy who has always ran a fully parametric 5-band EQ in his rig. Trust me - this thing is flat out incredible. Just running through the circuit and using the 3-band EQ (whether you decide to mix in some Drive or not) will do it's magic for your tone. The main difference between the Ampeg SVP Pro & the RPM is that the RPM emulation encompasses the FULL Ampeg SVT tube sound (power tubes, not just the preamp tubes). Whereas the Ampeg, with only preamp tubes, only gave a taste of the full SVT tone. Huge difference. The sheer amount input, outputs, effects loop w 50/50 mix, Blend control & overall signal routing offers total flexibility to novices up through studio & gigging pros. The beauty of the SansAmp is that there are no tubes to mess with, worry about or replace and - NO TUBE HISS like with the Ampeg. Geddy Lee recently started using the RPM model (over his RBI model) due to the greater tone capabilities that the semi-parametric Mid-sweep offers. I understand that the RPM also offers more overall gain when using the Drive function than the RBI unit. If your looking for a major improvement in your tone & to obtain the classic Ampeg SVT tone, try out the SansAmp RPM. close [-]

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