New, Used & Vintage Instruments & Repairs

Dr. Z RX ES Prescription Extra Strength Head


  • Manufacturer: Dr.Z
  • Product Type: Used Consignment

1 in stock

SKU: 73945C Categories: , ,

The original RX was always a controversial amp design with its highly percussive response, “in your face” drive, immediate attack, and high level of pinch note harmonics (as demonstrated on “Dead City” featuring Buddy Whittington.)

A collaboration between master Tele player Brad Paisley, and master amp builder Mike Zaite has given birth to the all new Prescription Extra Strength. The new “RX ES” is completely revised from the input jacks to the output jacks and shares no circuits with old RX.

The RX ES design structure is unique for a Z Amp as it uses an EF -86 pentode set up in a post EQ gain layout. This alignment yields a rich harmonic complexity and an almost active response from the tone stack. The RX’s dual calibrated inputs allow for sustaining gain in the Hi input, and a rich warm clean in the Lo input jack. The RX ES also features a footswitchable “Overdose” mode, which engages a 3 dB boost for added drive and gain without altering the preset tone, same EQ’d tone just much more DRIVE.

Dr Z’s old friend (and avid supporter of Z Amps since 1989) Joe Walsh demo’d the RX ES and ordered one on the spot to use on the Eagles Oct ’04 tour of Japan. Look and listen to his Blonde RX ES on new Eagles’ releases, and upcoming shows.

  • Power Output: 45 Watts
  • Output Tubes: 4 – EL84
  • Preamp Tubes:    2 – 12AX7, 1 – EF-86
  • Rectifier: 1 – 5AR4
  • Controls:    Volume, Treble, Mid, Bass