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Open Box Supro 1650RT Royal Reverb 35/45/60W 2x10 Tube Guitar Combo Amp  

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The 1650RT Royal Reverb is the flagship tube amplifier of the Supro line. This retro-modern masterpiece updates the mid-'60s classic with an all-tube feature set designed to deliver superior sonic fle... Click To Read More About This Product


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The 1650RT Royal Reverb is the flagship tube amplifier of the Supro line. This retro-modern masterpiece updates the mid-'60s classic with an all-tube feature set designed to deliver superior sonic flexibility and ample headroom along with enough stage volume to handle any gig.

The blue rhino hide tolex, compact physical dimensions and fundamental circuit topology are all derived from the original 2×10 Supro Royal Reverb combo amplifier. Like its vintage counterpart, the new Royal Reverb’s power tube tremolo comes after the reverb pan, lending an ethereal shake and wobble to the enveloping wash of tube-driven spring reverb.

Independent treble and bass controls in the preamp provide enhanced tonal control while Supro's unique, 3-way switchable power scheme allows the musician to coax a wide variety of texture from the 6L6-fueled power amp. The 35-Watt Class A (Cathode Bias) and 45-Watt Class AB (Grid Bias) modes both deliver the more spongy character of the 5U4 tube rectifier while the 60-Watt Class AB mode makes use of a silicon rectifier to achieve faster transient response with maximum available headroom and volume.

The unique Class A / Class AB switchability of the Royal Reverb model effectively equips this amp with two distinct tremolo voices. Set to Class A mode, the tremolo is pure vintage Supro, with its distinctive asymmetrical rhythm and overall depth dependant on how hard the output tubes are being pushed. Set to Class AB mode, the tremolo gets much deeper, with greater symmetry and overall range of amplitude modulation.

The Supro Royal Reverb carries a long, six-spring reverb pan with all-tube reverb drive; recovery stages provide warm and smooth reverb that “surrounds the note.” From subtle ambience to massive splashing surf madness, the Royal Reverb lives up to its name in every way.

  • Power: 35 watt (Class A, cathode bias); 45 watt (Class AB, grid bias); 60 watts (Class AB)
  • Tubes: four 12AX7; one 12AT7; two 6L6; one 5U4
  • Single channel
  • Single input
  • Speakers: 2x10 Supro CR10
  • Controls: 2-band EQ, volume, reverb, speed, depth, three-way rectifier power/class switching
  • FX: Reverb, tremolo
  • Blue Rhino Hide tolex
  • Dimensions: 23.6 in. x 16 in. x 10.5 in.
  • Weight: 65 lbs.
  • Assembled in NY, U.S.A.

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Review Snapshot

by PowerReviews
Supro1650RT Royal Reverb 35/45/60W 2x10 Tube Guitar Combo Amp

(based on 1 review)

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Reviewed by 1 customer

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Supro Royal 1650 Reverb/Tremelo 2x10 Tube Combo Amp

By mystarryeyes

from Los Angeles, California.

About Me Professional Musician


  • Easy To Use
  • Excellent Sound
  • Good Warmth
  • Portable
  • Powerful


    Best Uses

    • Amateur Recording
    • Events
    • Home Studio
    • Performances
    • Professional Recording

    Comments about Supro 1650RT Royal Reverb 35/45/60W 2x10 Tube Guitar Combo Amp:

    Primary use: Live performance, recording and songwriting.
    This guitar amp is so easy to use, an absolute joy, having no superfluous knobs to twiddle. Just turn it on, but before turning on the standby switch, be sure to give the tubes a minute to warm up, then flip that switch to the on position, crank the volume knob to your desired position, dial in your tone, bass and treble and you're good to go!
    Dial in some really cool reverb, and tremelo, as needed, to suit the style of the music you're playing.
    Use the included footswitch to turn those effects on and off, remotely.
    For pure class A, keep the rectifier knob at the 35 watt setting. For a liitle more power, switch it to the 45 watt setting, which is class AB, or if you really fancy blowing down the walls, switch it to the 60 watt, class AB setting. This amp is practically noiseless when switched on with no guitar signal going through it, but it can go from super clean to mean once you're ready to start playing. Courtesy of these settings, this amp is able to accomodate small, medium and large venues, and works just great with pedals on all of the 3 power settings. With or without pedals, the clarity of the sound is amazing, both clean and overdriven, with plenty of warmth and depth, and dare I say, balls, while being free of that hideous, mushy distortion one so often experiences when playing through lesser quality guitar amps.
    So, if you're in the market for an honest to goodness, well-made, awesome sounding, tube guitar combo amp, look no further. But before you buy - although this model is an absolute gem, I highly recommend you give all the Supro models a try.

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