Zeiler Audio PR-01 Preamplifier.

Zeiler Audio PR-01  preamplifier is radically reduced design, attention to detail and extensive listening trials make the PR-01 preamplifier an exceptional instrument for both enjoying and understanding music – minimalism follows consequence. 


  • Extremely sturdy enclosure, CNC-milled from a solid block of aluminium
  • All surfaces are glass-bead-blasted and then anodized with a highly resistive ceramic coating
  • Power supplies mounted on suspended sub-chassis to mechanically isolate them from the audio circuits
  • Extremely reduced circuit design with parts chosen in extensive listening tests
  • Components
  • Parts are manually channel-matched to close tolerances and hand-soldered point to point
  • Custom made Industrial Precision Potentiometer
  • Oversized choke-regulated power supplies and custom made power transformers
  • Cryogenically treated internal OFC copper wiring
  • Lundahl input and output transformers galvanically isolate the amplifier from the outside world 
  • Usability
  • Precision volume control providing accurate channel synchronization and sensitive volume adjustments down to the lowest volume ranges
  • Inputs with different sensitivity allow proper matching of both today’s and vintage audio components
  • The ON/OFF switch of the PR-01 can also switch the Power Amp → turn on/off the whole system with one switch
  • Widely used, reliable tube types ensure future availability

Technical Specifications

Design: Single Ended Class A Pure Triode
Inputs: 1 x Phono MM
2 x AUX / Line Level
1 x AUX / high sensitivity (for vintage equipment)  
Input Impedance: 47 KOhm (Phono MM)
1 MOhm (all other inputs)
Outputs: 1 x Direct Output
1 x Balanced / XLR
1 x Unbalanced / Cinch
1 x Source / Tape Output
Tubes: 4 x 12AX7 / ECC83 / ECC803S / E83CC / 7025
Power Consumption: 16 W in operation, no stand-by
Dimensions: 373 (width) x 360 (depth) x 113 (height incl. feet) mm 
Weight: 25.6 lbs (11.6kg)