Purity Audio Design Reference Tube Preamp - LAST ONE - SAVE BIG with options
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Condition | NEW |
Payment methods | |
Ships from | Endicott, NY, 13760 |
Ships to | United States |
Package dimensions | unspecified |
Shipping carrier | FedEx |
Shipping cost | $80.00 |
Original accessories | Remote Control, Box, Manual |
Average | Research Pricing |
LAST ONE - We have only ONE LAST Reference Available.
responseaudiony
Addition.3/13/17 - At no.additional charge, we will add to this unit 4 pieces of Bybee Purifiers at the outputs ($400 value) and upgrade the ClarityCap capacitors to the new CMR Series. We will also include Mu Metal shielding to the chassis. ($150 value).
PARTIAL TRADES WANTED; OPPO 105 - Magnepan 1.7 - Wilson Cub speakers - quality DAC - Have some quality speakers or a DAC just let us know.
The multi award winning Reference linestage continues to get better. The Purity Reference is a Class A, transformer coupled balanced linestage and is the result of years of intensive research directed at attaining the most accurate reproduction of recorded music. Unique topology and application of the most advanced technological resources and processes bring the Purity Reference to a threshold of excellence in sound reproduction. To add to the main features, the Purity Reference utilizes transformer coupling at both the input and output. Transformer coupling output results in a low output impedance making the Purity Reference a versatile unit that is capable of driving both solid state and vacuum tube amplifiers with input impedances as low as 600 ohms. Extraordinary transparency of perceived sound which in turn assures the recreation of a three dimensional soundstage.
The best sounding volume control next to autoformers is one that has the least resistance in the path and can maintain consistency throughout all frequencies, for this we chose autoformer attenuation.
The Reference now incorporates Dynamicap capacitors in the output stage. Enhancements in the power supply include the use of high current toroidal transformers and 100% polypropylene filter capacitors. The Reference now incorporates a newly developed tube power supply using the 5R4 rectifier. Tube filament power is now supplied by a high quality, highly regulated DC supply for the quietest possible presentation.
With 3 sets of balanced inputs, 3 sets of unbalanced inputs and 2 sets each balanced and unbalanced outputs, connection possibilities are vast. When an unbalanced input is selected, the signal still passes through the input transformer maintaining a low output impedance as well as the resolution and transparency transformer coupling is known for. Single ended outputs also benefit from transformer coupling. Absolute phase and balance control are selected both through the supplied aluminum remote handset and the front panel controls.
As with all Purity Series products, the remote circuit has been granted a dedicated power supply including a separate, standalone power transformer as not to interfere at all with the analog circuit.
Solid State Power Supply:
Enhancements in the solid state power supply include the use of high current toroidal transformers and 100% polypropylene filter capacitors with choke filtering
Tube Power Supply:
Shown above is the Reference utilizing the 5R4 tube power supply. Notice the only visual change in the upper chamber of the chassis is the addition of the tube rectifier. The tube power supply is designed around the 5R4 diode and uses a CLC topology with a full polypropylene first stage.
You can also chose our outboard VTPS choke input tube power supply based on the 274B. Please contact us for details
With either power supply, the Reference utilizes separate toroidal transformers to feed the high regulated tube filaments and a separate, dedicated power supply for the remote autofomer circuitry.
Specifications
Type : Class "A", Zero feedback, triode vacuum tube preamplifier
Circuit gain: adjustable from 5dB-17dB (with secondary autoformer option)
Input impedance: 100K Ω
Output impedance: 2000 ohms
Frequency response: 13Hz-35kHz -1dB
Total harmonic distortion: 0.05% @ 1V output
AC Power Requirements : 117/220/230/240 volts (factory wired)
Fuse: 1.2 amp fast blow (1/4" x 1-1/4")
Tube lineup : 6SN7 or 12AU7 ×2 / 5R4 x1
Dimensions : 16" Wide x 16" Deep x 6" High
Net Weight :
Shipping Weight:
Your choice of solid state or tube power supply
Power Supply - Solid State
- A large high current toroidal transformer
- Separate power transformer and DC power supply for remote control system
- Choke filtered power supply
- Polypropylene power supply filter capacitors
- StealthTM (Ultra Fast) diodes used throughout.
Power Supply - Tube Rectified
- High current mains transformer
- Capacitor input, choke filtered
- Multiple polypropylene capacitors make up first stage filter bank.
- High value final stage capacitor bypassed with quality film capacitor.
- Teflon tube socket
- 5AR4 rectifier.
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