Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
Dynaco PAS Tube Preamplifier
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1973 Dynaco PAS Tube Preamplifier w phono input - Fully Rebuilt & Serviced

Regular price
$899.95
Sale price
$899.95
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Fully Rebuilt Vintage 1973 Dynaco PAS Tube Preamplifier w/ phono input
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  • This unit was 100% disassembled to the last screw then rebuilt / serviced
  • New production circuit boards. 
  • All new fresh stock components were used to assemble the boards. 
  • This is a really nice unit and sounds awesome, zero hum and very musical. 
  • Four brand new Genalex 12AX7 gold pin tubes with their original boxes are included.
  • A vintage (NOS)12X4 rectifier tube by GE is also included in its original box.
  • The bypass caps are installed on the tone controls so there is a "null" center position like a 3X model.
  • The original Dynaco power transformer tested strong as new and works perfectly. 
  • The filament supply is an updated modern part using three 2,200 uF capacitors and a 2 amp bridge rectifier.
  • The correct quadruple filter capacitor is brand new, made by CE Mfg., rated 20/20/20/20 @ 475 volts. 
  • Modern film capacitors by makers like WIMA, Kemet, Panasonic, CDE. 
  • High quality metal film and carbon film and carbon comp resistors throughout. 
  • Black Cinch brand tube sockets. All new wiring, no old wiring was retained, anywhere. 
  • The selector switch was replaced by a modern 6 position rotary style by Alpha. 
  • All of the slide switches were replaced with new ones by Alpha.
  • All the resistors and capacitors on the controls and switches are new. 
  • Two of the four AC accessory outlets were chipped / damaged so these were removed and the empty holes blocked off nicely still leaving two nice functional accessory sockets.
  • The volume, bass, treble pots are original but the balance control is new, made by Bournes. Each of the original pots were cleaned and then treated to a nice bath of Deoxit.

The rear panel is all new. It's an upgrade piece from Dynakit that eliminates the tape out jacks, the ceramic and high level phono inputs, this also provides additional spacing, making room for larger modern connection cables. The tape monitor switch is also now wired for input source only, the tape monitor / tape loop function is disabled. The remaining low level phono input is setup for MM (moving magnet) type cartridge vinyl record players, the most common in use today. There is a really nice grounding post installed which is easier and better than the old original sheet metal screw these units had. The label on the rear panel is new and shows the new jack assignments/arrangement for the new rear panel jacks. The functions indicated at the three far left positions of the selector switch are now different than the front panel lettering indicates. Phono is now at the furthest left position, all the rest of the positions as you begin to rotate the selector clockwise are now line level inputs, as indicated on the back panel's new updated label. So again, the tape head and phono positions on the front are now for line level sources. The first position marked "special" is now actually for the phono. Takes a minute to get used to but just remember, phono is farthest left, as you rotate the selector to the right, it follows the jack arrangement on the back through the 5 line level positions. This actually makes the unit much more versatile by having 5 line level inputs instead of just 3, plus the single phono input. Besides, how many people use a high level or ceramic phono?

  • The knobs are original and very nice. The faceplate is very nice but does have some marks and signs of use.
  • There is lettering wear on the faceplate, as often seen at the power switch, tape monitor and loudness switches.
  • The entire chassis was cleaned and hand polished to bring back a nice fresh look. 
  • No rust or corrosion, no dents or bends. 
  • The bottom has four new rubber feet with steel bushings. 
  • An LED bulb occupies the socket of the original lamp fixture now to illuminate the original amber pilot jewel. 
  • The cover is refinished in a nice high heat satin black and still has its four original brass screws to hold it in place.
Be aware that some photos are of the unit during the build process and show scenes where certain components or wiring has not yet been installed. The unit is complete and the photos are of the unit you are purchasing.
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no warranty or guarantee due to 50+ year old age of those original parts still present in the unit.
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  • Guaranteed not to arrive damaged or DOA
  • Professionally packed / ships insured / signature required
  • No PO Box delivery, sorry.
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Sale is final, no returns, unit will arrive as described, no warranty is offered or implied.
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Shipped insured for full value - signature required*
Professionally packed and Promptly Shipped
No P.O. Box delivery