ProLogue Premium Integrated Amplifier - $2399

From the moment that the ProLogue Premium integrated amplifier became available, there was a whirlwind of buyers taking advantage of a product never before seen like this. 


It started with the reviews.  Robert Deutsch had the opportunity to use his review sample with his reference Avantegarde Uno Nano's.  A high efficiency speaker that will show the warts of any amplifier you use.  He next was able to use Martin Logan Montis electrostats and finally Golden Ear Triton Two dynamic loudspeakers.  We won't spoil the ending for you.  Read the review.  But suffice to say that people from around the world are rejoicing that they can actually own a true "High End" system with an integrated amp at $2399. 

The best integrated amp in its class just got better! By incorporating the best elements of the critically-acclaimed ProLogue One and Two, plus many of the ground-breaking features from the more advanced DiaLogue Series, the next generation ProLogue Premium Series, is an engineering marvel — a single, integrated amplifier that sets a new benchmark in high-performance audio with the following features:

  • Adaptive AutoBias. A PrimaLuna exclusive.  If anybody tells you that they have auto bias, ask them precisely how.  It's most likely not true.  As with all PrimaLuna amps, you never have to worry about biasing your amp ever again, and the need for matched tubes is eliminated.  Just plug in EL34, KT88, or KT120 (as well as many others) and AAB does the rest while improving sound quality.  Tubes are constantly monitored and kept in their best operating range, reducing distortion by up to 50%!
  • Home theater pass-thru. Straight from the critically-acclaimed DiaLogue Series, this direct-line circuitry means less noise and coloration over unity gain circuits.  You can hook it up to a surround processor, and when you switch the ProLogue Premium to HT the amplifier becomes in essence a power amp. 
  • Relay based input selection.  Instead of a cheap selector switch, PrimaLuna has a relay and circuit mounted at every input.  If you select a CD player input, for example, a relay closes and a perfect load is presented to the item you are listening to.  All other relays are open so as to prevent crosstalk between inputs.  This is many times more expensive to build, and you would never see it, but it is what PrimaLuna stands for!
  • New output and power transformers. Modeled after those in the DiaLogue Series, these heavy-duty, high-efficiency transformers offer better control over challenging speaker loads, as well as increased detail and musicality.
  • New front-end circuitry. Optimized to use two 12AU7 tubes per channel. With the improved transformers, produces lower distortion.
  • Full-function remote. Slim, anodized aluminum remote, controls volume, mute, and source selection, as well as Play/pause and Stop/eject functions of the new ProLogue Premium CD Player.
  • SmartWatts design.  PrimaLuna's true-value, low stress design philosophy.  Many manufacturers fudge on their power ratings, claiming power that is mathematically impossible.  Every seasoned tube owners knows that 20 watts from a tube amp is a ton of power.  What is really important is that PrimaLuna runs their power tubes up to 40% easier that other manufacturers.  You can tell easily by putting your hand on top of a PrimaLuna amp.  They run cooler than others.  There is no reason to run tubes at their jagged edge.  Why do manufactures do it? Click here to see more.

Next, the ProLogue Premium Series introduces four innovative circuits that protect the amp at every level:

  • BTI-circuit. BTI stands for "Bad Tube Indicator." On the chassis’ deck in front of each power tube, is a small LED that lights up if the tube goes bad. The circuit then puts the amp into protection mode.  With other brands, this may be when you have to break out the soldering iron to replace a plate resistor, and replace two or four tubes because your amp requires matched sets.  With PrimaLuna, you just replace the tube it tells you to (no matched tubes required), and turn the amp back on.  No hassles, no headaches. 
  • PTP-circuit. If the power transformer should overheat, this "Power Transformer Protection" circuit cuts primary power, allows the amp to cool down, then resets itself.
  • OTP-circuit. The "Output Transformer Protection" circuit protects the output transformers in the event of a massive tube failure or user error.
  • +B relay. Replaces the plate fuse and works in conjunction with the OTP-circuit to protect the amp against tube failure. This method is less intrusive sonically and the relay resets itself once the faulty tube is replaced.

As with all PrimaLuna components, the ProLogue Premium Integrated is made by hand with the finest point-to-point wiring and quality equal to—or better than—any product you can buy at any price. Built using premium parts featuring: ceramic tube sockets; Solen and Nichicon capacitors; WBT-style solid core speaker terminals; ALPS Blue Velvet volume control; gold-plated RCA jacks; toroidal power transformer. All packaged in a high-gloss, hand-rubbed finish.

Connecting a subwoofer? Click here to see how.

 

Owner's manual

Specifications

Output:
35 watts x 2 with EL34, 40 watts x 2 with KT88
Freq. Response: 20Hz-30kHz +/- 0.5dB
THD: Less than 1% at full power
S/N Ratio: 89 dB
Input Sensitivity: 300mV
Power Consumption: 300 watts
Dimensions: 14.5 " x 8" x 15.5" (WxHxD)
Weight: 46.3 lbs
Inputs: 4 pair RCA / 1 pair HT bypass
Outputs: 4 and 8 Ohm speaker taps
Tube Compliment: 4 - 12AU7, 4 - EL34 (KT88 tubes optional)