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Roll Music Tubule - RMS5A7 500 Tube Mic Pre  From Roll

500 series tube preamplifier, single space

Roll Music Systems


Retail:  $1,000.00

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Manufacturer's Description from Roll

Roll Music Systems Inc introduces new RMS5A7 tube microphone preamplifier or "Tubule" in 500-series modular format.

Roll Music Systems, manufacturer of the popular RMS216 Folcrom passive summing device and the acclaimed RMS755 Super Stereo compressor, are set to release their next innovative new product.

With the explosion of new modular products for the 500-series frames sold by various manufacturers, user requests for a tube-based module have been met almost universally with claims by designers and engineers that it couldn't be done. Roll Music Systems has proven it can be done, and be done well.

The Tubule is a real transformer-coupled tube mike preamp, getting all its amplification from a standard dual triode tube. It uses sophisticated modern power management circuitry to generate the high-voltage plate supply and the high-current heater supply to power the tube. Careful design of this high-efficiency power management circuitry has allowed for a preamp that fits within the space and power consumption limitations of a single module.

The Tubule features switches for -20dB input pad, polarity inversion, and phantom power, a 12-position gain control switch that ranges from 33 to 66dB in 3dB steps, and a continuously-variable input attenuator that ranges from 0 to -10dB for very accurate gain settings that can be easily recalled.

Roll Music Systems

About Manufacturer

The name Roll Music Studios is an indication of our business and aesthetic philosophy regarding music and the effective production of it. Roll Music stems of course from Rock and Roll Music, which has been fairly popular in our community for a number of years. The name has been shortened at times to simply Rock Music, and we believe that dropping the word Roll coincided with a conspicuous deviation from the rhythmic principles which gave early Rock & Roll music much of its power. This may be a somewhat unorthodox position for us to hold, since Rock Music and its various sub-sub-genres such as Hard Rock and Punk Rock are widely believed to be founded on the raw power element of the driving Rock & Roll rhythms. We believe the real power of Rock & Roll music came from a more subtle, subversive polyrhythm that revealed its true animalistic, sexual origin.* We therefore adopted the name Roll Music in an effort not to reject the pounding, thrusting rhythm of Rock Music, but to reaffirm our commitment to the fluttering, fleeting side rhythms present in true Rock & Roll music.


Equivalent Input Noise (66dB gain, 150Ω source):  -121dBu

Input Impedance:  1200Ω balanced

Recommended Source Impedance:  150Ω balanced

Maximum Input Level:  +22dBu rms

Maximum Output Level:  +25dBu rms

Output Impedance:  <300Ω balanced

Recommended Load Impedance:  >10kΩ balanced

Gain Range:  3dB steps, 33-66dB

Input Attenuator:  Variable, -10 to 0dB

Input Pad:  Switchable, -20dB

Frequency Response:  +/-1dB, 10Hz-40kHz


Power Requirements

optional for optimal headroom:

+/-16V @ 0.100A

+48V @ 0.003A

Vacuum Tube:  12DW7 / ECC832 / 7247