Base price without tubes or other options/upgrades is $1,399.95

Covers for the PAS are currently available in BLACK only until further notice.

This is the special order PAS-3  (also called PAS-M) Tube Preamplifier. Base price shown is without upgrades, options or tubes. 

These preamps have a 3-4 week production period, as each unit is custom built and tailored to your liking. It takes some time to order and receive the components, and of course time for building and testing the unit. There will usually be a few orders to complete before I get to your build. The component varieties, brands and features offered are proven top performers. You can buy with confidence, I'll build you a great sounding preamp. If you need one now, please check to see if one is "ready-to-ship".

The photos shown are of previous units, with upgrades, to provide visual examples. Generally speaking, most units look very similar when completed.

STANDARD BUILD FEATURES:

• Traditional Dynakit power/filament supply + filter cap + 12X4 tube

• Dynakit PA-211B (120 V) transformer, fused AC mains. (this is the all new and latest revision)

• Original PAS Circuit on Genuine Dynakit circuit boards with integrated ground planes

• Carbon film and metal film resistors, KOA Speer, Yageo, TE Connectivity, Ohmite, etc.

• Audio grade film capacitors by Cornell Dubilier, Panasonic, Kemet, Vishay, Illinois Capacitor, etc.

• Alps "Blue Velvet" Volume Control

• All new Tone & Balance Control pots & power switch

• Modern 6 position Selector Switch

• Premium Dynakit input-output panel with Gold Plated RCA jacks

• 5 high level inputs: for CD, Tape Deck, Radio Tuner, MP3, DAC, etc.

• *1 dedicated low level MM phono input (47K moving magnet)*

• Phono ground post with brass thumbnut

• 22 gauge stranded wiring, soldered with Kester 63/37 eutectic solder

• Brand new stainless steel chassis by Dynakit

• Covers for the PAS are currently available in BLACK only until further notice.

• Machined solid aluminum faceplate and matching knobs w/set screws

• Adjustable LED pilot lamp

• Belton Micalex tube sockets (standard pin)

• Set up for high impedance amplifiers @ 470KΩ  - like the ST-70, ST-35, MK III and others. 

The aluminum faceplate has updated (modern) nomenclature printed around the selector knob. The selector stops at 6 marked positions which indicate the selector functions and it follows the rear panel jack orientation. Functions for the jacks are also diagramed on the rear panel label. Again, the indicated selector functions match the rear panel labeling and follow the designated order on both the faceplate and the rear panel label. 

There are no provisions for a filter, loudness or tape monitor switch, so those functions are eliminated. The stereo to mono blend switch is also omitted, and the volume control is relocated above the balance knob as shown in the photo. The rear panel has jacks for 5 line level (high level) inputs and one dedicated 47K Moving Magnet phono input and features a phono ground post. 

IMPORTANT NOTES: 

• Many modern turntables feature a built in preamp. Some of these turntables with an integrated preamp will have a switch to control the on / off function for the built in preamp. If the turntables preamp is fixed / always on, then connect the turntables outputs to one of the PAS high-level inputs only. If you can turn off / disable the turntables preamp, then you can use the dedicated phono inputs of the PAS. You must have the turntables preamp turned off / disabled to use the PAS phono inputs.

• *MC (moving coil) turntables will require the use of a step up transformer (SUT) between the player and the preamp.

• Due to limitations of the selector switch, there are no tape loop or tape monitor functions. You will not be able to use this preamp for recording. This preamp is designed for playback only. 

• It is suggested to have only one source at a time playing to reduce the potential for crosstalk. 

• The preamplifier uses high gain circuits, especially notable in the phono section. It is normal to hear hiss and/or noise from the phono stage if volume is applied without a source to the inputs. 

• There are no auxiliary AC outlets, to minimize electrical interference. The chassis openings are nicely blocked off.

Base price without tubes or other options/upgrades is $1,399.95

OPTIONS & TUBES

PAS PREAMPLIFIER TUBES  (tubes not included)

The PAS Tube Preamplifier uses the tubes listed below

• (4) 12AX7 Preamp Tubes (recommended tubes are JJ 12AX7 short plate version)

• (1) 12X4 Rectifier Tube (only available in NOS, no current production availability)

You are not required to order or purchase tubes with the preamp.

If you choose to source your own tubes, your preamplifier will still be fully tested, but it will ship without tubes. 

If you want to order tubes with the preamp, please view the PAS tubes page.

PAS PREAMP OPTIONS / UPGRADES

• Alternative Tube Sockets are available

About the Dynakit PAS-3 tube preamplifier

This preamp is also referred to as a PAS-M. This preamplifier retains that amazing warmth and sparkle, but still creates the holographic and detailed presentation that is missing in so many modern designs. I've heard the terms "most important preamp in the world, most significant and most famous" used, referring to the original PAS. Taking into account the most desirable qualities and addressing the weak points of the original design, this PAS-3 steps into the ring, updated with a full set of performance advantages. A perfect companion to drive your new or vintage tube amplifier. This PAS outperforms its vintage predecessors in both output quality and reliability. 

Careful consideration is given when choosing components for the preamp that will contribute to, support and reveal the beautiful details and amazing sonic characteristics of vacuum tubes. Even order harmonics are favorable to the western musical scale and are more pleasing to the ear than the harsh and fatiguing odd order harmonics generated with solid state. 

Want to hear what actual owners have to say? Click here to read some of their reviews.

• The best tube preamp for driving the Dynaco ST-70, ST-35, MKIV and MKIII or similar high impedance tube amplifiers

• Now available with an "impedance buffer" which makes the PAS compatible with any amplifier. (see the options page)

• The Dynakit PA-211B power transformer is wound to operate from a standard 120V-125V outlet. (no voltage reducer necessary)

• Dynakit power supply (filament supply) with a multi-section filter capacitor and a 12X4 rectifier tube.

• Alps "Blue Velvet" Volume Control is now included as standard, there is no alternative.

• The pilot lamp is LED with adjustable brightness.

• The volume, balance and tone controls are all new.

• This is not a rebuild, it's all new, a modernized, re-envisioned version of the original PAS.

Be sure to see our "ready-to-ship" preamps. They are assembled and ready to go.

Base price without tubes or other options/upgrades is $1,399.95

PAS Preamp Dimensions:

• 13.5" Wide X 9" Deep X 4.5" Tall

• Height may be slightly higher (+1/2") with larger feet installed

• Unboxed weight is approximately 11 lbs

*These are the maximum measurements taken at the tallest point, widest point and a depth measurement that was taken from the outer edge of the rear mounted RCA jacks to the front edge of the control knobs. (depth measurements are without cables attached)

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