Rivera TBR-1M

Rivera TBR-1M 2x60w All Tube STEREO + Footswitch w/Case

The M Model is designed for musicians looking for a sweeter and fatter tone than the Standard Model TBR. With two additional equalization controls in Channel 1 than the Standard Model, the M Model offers more timbre possibilities. Easily driven into preamp distortion than the Standard Model. Sonically, the M Model is related to the traditional sweet tone of the Fender/Dumble/Boogie family. Channel 2 is the same as on the Standard Model.

Rivera TBR-1M with all the bells and whistles. Very flexible two-channel amp with a variety of features. Channel one is a Mesa Dumble kind of thing channel two is a blackface type channel. Lots of options come with a manual. A few scuffs but built like a tank.

The amp is loaded with Russian 12AX7s and Tesla EL34s I believe. Can replace with RCA 6L6GC backplates if you are willing to compensate the value of tubes in trade (tubes are nos matched pairs).

During "Ramble On's Reverb Review" of Rivera's incomparably versatile tone masterpiece, the TBR-1M Stereo Guitar Amplifier, the Rambler's attempt to break down the many design features and tones from what they feel may very well be The One Amp To Rule Them All. 

Fat, Deep, and Robust the TBR-1M voicing has some of the sweetest guitar tones ever created. Deal with this reality friends. 
Designated as a guitar amplifier, the TBR-1M may be best suited as a Studio Tool with features kin to THERMIONIC CULTURE VULTURE and options like parametric equalizer, Dual Reverb pans, tube tone, and much more.
There are no cabinets necessary meaning you can utilize the preamps for Studio Magic without the need for load concerns. Built-in attenuation paired with isolated stereo gain controlled direct outs, this Tone Scalpel is perfect for signal processing.
Furthermore, the front patch bay adds an effect point before the preamps perfect for a compressor/limiter. 

History
The TBR-1M (M = Maximum Flexibility) was masterminded by high-end American amp manufacturer Paul Rivera, founder of Rivera Research and Development. The TBR-1M for sale & pictured has all original Rivera Branded EL34 tubes with expected rack wear and some light blemishes. We are the second owners and it has sat in its custom rack for the past decade. Estimate 20 hours of use in its lifetime. The original owner set it in a rack and used it mainly to showcase its tones. Never gigged. 

Volume & Master and Pcomp Control 

• The MASTER control regulates/boosts the amount of signal the power amplifier receives from the preamp section.
  
• Each channel's individual input VOLUME Control boosts the preamp's volume without overdriving the signal. 
  
• The Pcomp knob controls the overdrive characteristics of the preamps lending a symbiotic 3-contact control system that is irrefutably superior to standard 2 Volume/Gain controls. 

Preamp Channels 
The TBR-1M has 2 distinctly different, totally Independent Input Channels.

• Channel 2 was originally designed to be used as a clean rhythm tone with sonic textures kin to the Fender Baseman 4x10, Fender Black-face, and early plexiglass front Marshalls. 

• Channel 1 was designed for easy preamp distortion with a passive three-band network control for extreme timber manipulation possibilities and a voicing that outputs Deep, Fat low-end with Sweet Crisp highs, relatable to the Fender/Dumble/Boogie family however we excitedly dialed in the overdrive tones of Matamp GT120 and Sunn Model T along with many secular tones. 

Amp Basics

• 4 rack space
• 2 Independent Channel
  
• Atennuated (no cabinet needed STUDIO)
• Dual Stereo Outputs
• Pentode & Triode: 60, 30, 15, 8 watts (x2)
• Original Rivera EL34's & 12ax7's tubes
• Stereo Send/Return
• Stereo Direct Outputs each with gain control
• Focus: Variable Speaker Dampening Control
• Pcomp Control: Active Pickup Compensation 
• Slope/QTime: notched mid-frequency control
• Push Pull Control
• Dual Channel Reverb 
• Multiple Audio Signal Routing Options