PROLOGUE PREMIUM

INTEGRATED

primalunabg.jpg

Take your 100 watt amp and put it on Ebay. Or have a yard sale. You’ll never hook it up again.

ProLogue Premium Integrated - $2399

We don’t want you to compare the ProLogue Premium to an integrated that sells for $2399. That’s too easy. We want you to compare it to an integrated that sells for $5000. Compare it for the things that really count. Build quality like point to point wiring. Premium parts like an Alps Blue Velvet Volume control. Custom-wound output transformers for super-wide bandwidth and REAL bass that has punch and follow-through. Engineering like Adaptive AutoBias, Bad Tube Indicator, Super Quiet Relay source selection instead of cheap switches, and SmartWatts which assures you no headaches that for years have been associated with tubes. No longer will you be a slave to worry about how much time you left your amp on. Turn it up. Have fun. Use it every day. All day.

You can compare the sound and it will become immediately apparent. But if that's not possible, don't worry. The most well-known experts in audio have done it for you. While most products you read about get good reviews, they don't get chosen by the experts for their own personal use.

Bob Deutsch, an expert in audio and a well-known senior reviewer at Stereophile magazine, reviewed the ProLogue Premium in 2012. Not only did he give it a great review, he loved it so well he asked if he could continue to use it for writing reviews of top-name loudspeakers. For years now it's been mentioned in the pages of Stereophile, but in one 2015 review in particular, he really summed it up by saying: 

Ever since I reviewed PrimaLuna’s ProLogue Premium, for the June 2012 issue, it has been the model I turn to when I wanted a moderately priced integrated amplifier to try with a new speaker. It never disappointed me, and never seemed outclassed, even when the speaker was the Martin Logan Montis ($10,000/pair). At $2399, the ProLogue Premium to me represents the “sweet spot” for systems in the range of $4,000-$10,000 or higher.
— Bob Deutsch, Stereophile

Did he say Martin Logan Montis? Those big electrostats? Yup. Just like in solid state, you can have a 100 watt receiver and it doesn’t sound as good as a high quality 50 watt amp. As an experienced audiophile, you probably already know that power has nothing to do with sound quality. Here is proof. Speaker reviews written by a qualified professional using a 36 watt amp. Welcome to the world of educated buyers.

 
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PROLOGUE CLASS POWER AND OUTPUT TRANSFORMERS

250 watts of power will have no top and bottom extension if the output transformers don't have enough bandwidth. We use lower power to extend tube life, and bandwidth to give you slam. Our output transformers are custom wound in-house for deep and tight bass extension, an extended top without even a hint of grain, and our famous PrimaLuna midrange.

Unlike standard EI power transformers, toroidal transformers don’t radiate a magnetic field, which can is easily detected in preamp circuits as low-level "hash". Although expensive to manufacture, PrimaLuna power transformers are built huge and rated for 200% of their duty cycle. PrimaLuna transformers are also potted and enclosed to protect the windings from moisture and deterioration forever.

NEW FRONT-END CIRCUITRY

We chose 12AU7 tubes because there are more factories around the world making great ones today than any other tube, so you can try them and see if you prefer their "color." In addition, because 12AU7's have always been a popular tube, there are tens of thousands of vintage new-old-stock 12AU7's available everywhere from the greatest factories like Telefunken, Mullard, Amperex, Cifte, Siemens, and more. Tons of them. If you haven't "Tube Rolled," it's a gas, and how you get that last 10% of PERFECT tonal balance to YOUR tastes. 

SuperQuiet Line Inputs

Input selector switches mounted on the front panel requires long wires to run from the switch in the front to the rear RCA jacks, and they invite stray noise like RF and EMI.

PrimaLuna has a better way. Instead of a switch, input selection is done using premium quality sealed relays mounted in the rear where you plug in your components. When an input is selected, that relay closes giving you the best connection possible. All the other relays are left open, so noise and signals from other sources can’t leak in. The signal path is now almost non-existent, so there are no wires to pick up noise.

PrimaLunaAdaptiveBoard.jpg

ADAPTIVE AUTOBIAS

What most companies call Auto Bias is actually "Cathode Bias"- A commonly used method that is cheap to make, and often found in guitar amps, but also $20,000 high end audio amps. It reduces the available power of the amp and runs the tubes hard, meaning shorter tube life and failures via "shorts".

PrimaLuna's Adaptive AutoBias is a true, smart technology employing an array of sensors to monitor tubes and make adjustments seamlessly in real time. Adaptive AutoBias is completely passive and NOT in the signal path. The result is low to no maintenance, long tube life, and the lowest possible distortion for amazing sound.

POINT TO POINT WIRING

You spend a lot of money on interconnects. So why have the signal go right from the RCA jacks or speaker terminals into circuit boards with copper traces so thin you can hardly see them? What’s high-end about that?

PrimaLuna employs Point to Point Wiring on all products. The entire signal path, including resistors and capacitors, is painstakingly hand wired with heavy-gauge cable by craftsman.

SMARTWATTS - EXTENDED TUBE LIFE

Tube life is simply a matter of how hard you run the tubes. That’s it. The only way to extend tube life is to run them as close to zero as you possible can, making sure it is not so low you go into crossover distortion. The life of a tube will depend on two things: Plate and screen voltage.

If the plate and screen voltage is high, you are more likely to get tube shorts when you turn the amp on and you get cathode stripping which greatly effects the cathodes ability to spit out electrons. Manufacturers that run the hell out of tubes to pump up their power ratings will never tell you what voltages they use. They’ll say it’s “proprietary” as if it’s some secret sauce. There is no such thing. But if they told you that they used 575, 600, or even 625 volts you probably wouldn’t buy. We proudly tell you our tubes run at just about 417 volts for the plates and screens.

PrimaLuna runs their output tubes at a minimum dissipation without going into crossover distortion. When you look at our amps, they provide less power from each tube. With KT-120’s as an example, a PrimaLuna will give you only 21 watts per tube. So running a pair of them you get 42 watts. That’s a lot of power, but the demands per tube are a fraction of some manufacturers that give you 100 watts from a pair of KT-120’s. It’s a cheap way to get big power, and it’s cheap. In fact, free. To get more power the right way is expensive. It requires bigger transformers, sockets, wiring, resistors, capacitors, and the tubes to do it. Which is exactly what PrimaLuna did. But we didn’t stop there.

Read this carefully: Power has nothing to do with sound quality. Or bass slam. You can buy a 200 watt receiver for $299, and it will even have surround sound. Do you think for a minute it will sound better than a 50 or 100 watts high end amp costing $10,000? Of course not. Only first-time buyers think that way. Experienced audiophiles know that for the majority of listening sessions, you use maybe 10 watts of power.

ProLogue Premium Features Comparison
 

DiaLogue Premium HP

DiaLogue Premium

ProLogue Premium

ProLogue Classic

Price
?
Don't Overpay!
We want you to know our prices. PrimaLuna represents the best value in the industry. Compare us to anyone.
Headphone Amplifier
?
Headphone Amplifier
One of the best headphone amps in the world. Most tube integrated amps and preamps use a solid state op-amp chip for running headphones. Stand alone tube headphone amps will vary in quality like any other tube amp. Headphones are simply small speakers that require less power. Some will use smaller output tubes that groan to have enough dissipation to run power-hungry planar headphones. Other brands, including those costing $5,000 or more like Mal Valve, will use larger output tubes, then use a voltage divider network to drop the power down to an acceptable level for headphones. This is how PrimaLuna designed the HP. We simply took advantage of the fact that this is the best tube integrated amplifier. Now you don't have to pay for a separate state of the art headphone amp. Unlike the other brands, the HP can even run your headphones in Triode or Ultra-linear operation at the push of a button!
Swiss Made Wiring
?
Swiss Made Wiring
DiaLogue Premium models use Swiss-made, silver-plated, oxygen-free continuous crystal (OCC) copper with a Teflon dielectric in the critical signal path for superior signal speed and increased clarity.
 
Takman Resistors
?
Takman Resistors
If you bought a lesser amplifier, you would pay hundreds to make this upgrade. Easy to identify through their pink color, these premium resistors from Japan are popular with those who rebuild and upgrade their gear. "Modders" love TAKMAN for their low noise, linearity, and musicality.
 
SCR Tinfoil Capacitors
?
SCR Tinfoil Capacitors
Made in France, these capacitors are used in the critical signal paths and while they are expensive, the PrimaLuna team felt they could not be left out after careful listening comparisons with many different types.
 
Subwoofer Output  
AC Offset Killer
?
AC Offset Killer - A PrimaLuna Exclusive
This PrimaLuna technology helps make our products so quiet, you will get goose-bumps. PrimaLuna's parent company Durob Audio B.V. sells this as a stand alone item under the Ah! brand name. The fabulous company P.S. Audio sold something similar as a "Humbuster". AC Offset Killer keeps the main AC power transformer as quiet as possible. PrimaLuna custom-winds superb AC toroidal transformers that are low in hum. This circuit takes it a to a place no other manufacturer dreams of going. Adding this to your stereo would cost hundreds.
 
Triode/Ultra-Linear Switching
?
Remote controlled Triode/Ultra-linear Switching
Do you have some classic rock albums you used to love so much that have now ended up left on the shelf, un-played for years? How about jazz or classical recordings from the 60’s? Every audiophile has albums that they used to play, but stopped because they are harsh, brittle, or bright. There is a solution.
Triode and Single Ended Triode (SET) amps are popular for their warmer, fuller, and easy to settle into sound. But triode amps have limitations! Ultra-linear has more extension on the top and bottom, not to mention greater power. They have greater “pop” with a bigger difference between light and dark, and loud and soft. Having triode only is VERY limiting.
The best option is to have both triode and ultra-linear. PrimaLuna engineers in Holland designed an ingenious circuit that lets you change from triode to ultra-linear with a push of a button on the supplied remote control. No need to get up and stop the music. Make an instant comparison while you listen and choose what you like best for that song or album.
 
SuperQuiet Inputs
?
SuperQuiet Inputs
Input selector switches mounted on the front panel requires long wires to run from the switch in the front to the rear RCA jacks, and they invite stray noise like RF and EMI. Additionally, audio quality degrades as the switch gets dirty and worn and they present crosstalk between the inputs. This crosstalk causes noise which obscures micro details in the music.
PrimaLuna has a better way. Instead of a switch, input selection is done using premium quality sealed relays made by Fujitsu in Japan, mounted in the rear where you plug in your components. When an input is selected, that relay closes giving you the best connection possible. All the other relays are left open, so noise and signals from other sources can’t leak in. Relays open and close, so there is no selector switch wiper to get dirty, noisy, or wear out. The signal path is now much shorter. In fact it’s almost non-existent, so there are no long wires to pick up noise.
Remote Control
?
Remote Control
DiaLogue Premium models feature a full function remote control. ProLogue Premium features a slim remote. ProLogue Classic has no remote function.
KT150 Compatible
?
KT150 Compatible
In 2006 PrimaLuna introduced the original DiaLogue series; the first amplifiers designed to be as close to being future proof as humanly possible. Back then nobody imagined a tube like the KT120, let alone the KT150, which combines the sweetness of a 300B with bass and control never seen before. Now other companies are scrambling to make a product built to handle the demands of this incredible tube.
All PrimaLuna DiaLogue Premium and ProLogue Premium amplifiers and integrated amplifiers are built with huge power transformers and filaments supplies needed to run KT150 tubes. And the ingenious design of our exclusive Adaptive AutoBias circuit means that PrimaLuna buyers from ten years ago don’t have to sell off their system to enjoy new tube developments.
Adaptive AutoBias
?
Adaptive AutoBias
What most companies call Auto Bias is actually "Cathode Bias"- A commonly used method that is cheap to make, and often found in guitar amps, but also $20,000 high end audio amps. It reduces the available power of the amp and runs the tubes hard, meaning shorter tube life and failures via "shorts".
PrimaLuna's Adaptive AutoBias is a true, smart technology employing an array of sensors to monitor tubes and make adjustments seamlessly in real time. Adaptive AutoBias is completely passive and NOT in the signal path. The result is low to no maintenance, long tube life, and the lowest possible distortion for amazing sound.
Point-to-Point Wiring
?
Point to Point Wiring
You spend a lot of money on interconnects. So why have the signal go right from the RCA jacks or speaker terminals into circuit boards with copper traces so thin you can hardly see them? What’s high-end about that?
PrimaLuna employs Point to Point Wiring on all products. The entire signal path, including resistors and capacitors, is painstakingly hand wired with heavy-gauge cable by craftsman.
Bad Tube Indicator
?
Bad Tube Indicator
A small LED in front of each power tube 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 bad tube (no matched tubes required), and turn the amp back on. No hassles, no headaches.
The ProLogue Classic uses a more simplified indicator with a single LED on the faceplate.
Wide-Bandwidth Output Transformers
?
Wide-Bandwidth Output Transformers
250 watts of power will have no top and bottom extension if the transformers don't have enough bandwidth. We use lower power to extend tube life, and bandwidth to give you slam. Our output transformers are custom wound in-house for deep and tight bass extension, an extended top without even a hint of grain, and our famous PrimaLuna midrange.
Toroidal Power Transformers
?
Custom Potted Toroidal Power Transformers
Unlike standard EI transformers, toroidal transformers don’t radiate a magnetic field, which can is easily detected in preamp circuits as low-level "hash". Although expensive to manufacture, PrimaLuna power transformers are built huge and rated for 200% of their duty cycle. PrimaLuna transformers are also potted and enclosed to protect the windings from moisture and deterioration forever.
ALPS Blue Velvet Potentiometer
?
Japanese ALPS Blue Velvet Potentiometer
The ALPS Blue Velvet motorized volume control tracks better so a defined stereo image is established and doesn't collapse as you raise and lower volume. And it will stay quiet, adhering to PrimaLuna's guiding principle of "Built to last a lifetime". This part alone costs ten times more than a simple "chip" that we could have used.
Output Transformer Protection
Power Transformer Protection
Don't Overpay!
We want you to know our prices. PrimaLuna represents the best value in the industry. Compare us to anyone.
Headphone Amplifier
One of the best headphone amps in the world. Most tube integrated amps and preamps use a solid state op-amp chip for running headphones. Stand alone tube headphone amps will vary in quality like any other tube amp. Headphones are simply small speakers that require less power. Some will use smaller output tubes that groan to have enough dissipation to run power-hungry planar headphones. Other brands, including those costing $5,000 or more like Mal Valve, will use larger output tubes, then use a voltage divider network to drop the power down to an acceptable level for headphones. This is how PrimaLuna designed the HP. We simply took advantage of the fact that this is the best tube integrated amplifier. Now you don't have to pay for a separate state of the art headphone amp. Unlike the other brands, the HP can even run your headphones in Triode or Ultra-linear operation at the push of a button!
Swiss Made Wiring
DiaLogue Premium models use Swiss-made, silver-plated, oxygen-free continuous crystal (OCC) copper with a Teflon dielectric in the critical signal path for superior signal speed and increased clarity.
Takman Resistors
If you bought a lesser amplifier, you would pay hundreds to make this upgrade. Easy to identify through their pink color, these premium resistors from Japan are popular with those who rebuild and upgrade their gear. "Modders" love TAKMAN for their low noise, linearity, and musicality.
SCR Tinfoil Capacitors
Made in France, these capacitors are used in the critical signal paths and while they are expensive, the PrimaLuna team felt they could not be left out after careful listening comparisons with many different types.
AC Offset Killer - A PrimaLuna Exclusive
This PrimaLuna technology helps make our products so quiet, you will get goose-bumps. PrimaLuna's parent company Durob Audio B.V. sells this as a stand alone item under the Ah! brand name. The fabulous company P.S. Audio sold something similar as a "Humbuster". AC Offset Killer keeps the main AC power transformer as quiet as possible. PrimaLuna custom-winds superb AC toroidal transformers that are low in hum. This circuit takes it a to a place no other manufacturer dreams of going. Adding this to your stereo would cost hundreds.
Remote controlled Triode/Ultra-linear Switching
Do you have some classic rock albums you used to love so much that have now ended up left on the shelf, un-played for years? How about jazz or classical recordings from the 60’s? Every audiophile has albums that they used to play, but stopped because they are harsh, brittle, or bright. There is a solution.
Triode and Single Ended Triode (SET) amps are popular for their warmer, fuller, and easy to settle into sound. But triode amps have limitations! Ultra-linear has more extension on the top and bottom, not to mention greater power. They have greater “pop” with a bigger difference between light and dark, and loud and soft. Having triode only is VERY limiting.
The best option is to have both triode and ultra-linear. PrimaLuna engineers in Holland designed an ingenious circuit that lets you change from triode to ultra-linear with a push of a button on the supplied remote control. No need to get up and stop the music. Make an instant comparison while you listen and choose what you like best for that song or album.
SuperQuiet Inputs
Input selector switches mounted on the front panel requires long wires to run from the switch in the front to the rear RCA jacks, and they invite stray noise like RF and EMI. Additionally, audio quality degrades as the switch gets dirty and worn and they present crosstalk between the inputs. This crosstalk causes noise which obscures micro details in the music.
PrimaLuna has a better way. Instead of a switch, input selection is done using premium quality sealed relays made by Fujitsu in Japan, mounted in the rear where you plug in your components. When an input is selected, that relay closes giving you the best connection possible. All the other relays are left open, so noise and signals from other sources can’t leak in. Relays open and close, so there is no selector switch wiper to get dirty, noisy, or wear out. The signal path is now much shorter. In fact it’s almost non-existent, so there are no long wires to pick up noise.
KT150 Compatible
In 2006 PrimaLuna introduced the original DiaLogue series; the first amplifiers designed to be as close to being future proof as humanly possible. Back then nobody imagined a tube like the KT120, let alone the KT150, which combines the sweetness of a 300B with bass and control never seen before. Now other companies are scrambling to make a product built to handle the demands of this incredible tube.
All PrimaLuna DiaLogue Premium and ProLogue Premium amplifiers and integrated amplifiers are built with huge power transformers and filaments supplies needed to run KT150 tubes. And the ingenious design of our exclusive Adaptive AutoBias circuit means that PrimaLuna buyers from ten years ago don’t have to sell off their system to enjoy new tube developments.
Adaptive AutoBias
What most companies call Auto Bias is actually "Cathode Bias"- A commonly used method that is cheap to make, and often found in guitar amps, but also $20,000 high end audio amps. It reduces the available power of the amp and runs the tubes hard, meaning shorter tube life and failures via "shorts".
PrimaLuna's Adaptive AutoBias is a true, smart technology employing an array of sensors to monitor tubes and make adjustments seamlessly in real time. Adaptive AutoBias is completely passive and NOT in the signal path. The result is low to no maintenance, long tube life, and the lowest possible distortion for amazing sound.
Point to Point Wiring
You spend a lot of money on interconnects. So why have the signal go right from the RCA jacks or speaker terminals into circuit boards with copper traces so thin you can hardly see them? What’s high-end about that?
PrimaLuna employs Point to Point Wiring on all products. The entire signal path, including resistors and capacitors, is painstakingly hand wired with heavy-gauge cable by craftsman.
Bad Tube Indicator
A small LED in front of each power tube 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 bad tube (no matched tubes required), and turn the amp back on. No hassles, no headaches.
The ProLogue Classic uses a more simplified indicator with a single LED on the faceplate.
Japanese ALPS Blue Velvet Potentiometer
The ALPS Blue Velvet motorized volume control tracks better so a defined stereo image is established and doesn't collapse as you raise and lower volume. And it will stay quiet, adhering to PrimaLuna's guiding principle of "Built to last a lifetime". This part alone costs ten times more than a simple "chip" that we could have used.
Wide-Bandwidth Output Transformers
250 watts of power will have no top and bottom extension if the transformers don't have enough bandwidth. We use lower power to extend tube life, and bandwidth to give you slam. Our output transformers are custom wound in-house for deep and tight bass extension, an extended top without even a hint of grain, and our famous PrimaLuna midrange.
Custom Potted Toroidal Power Transformers
Unlike standard EI transformers, toroidal transformers don’t radiate a magnetic field, which can is easily detected in preamp circuits as low-level "hash". Although expensive to manufacture, PrimaLuna power transformers are built huge and rated for 200% of their duty cycle. PrimaLuna transformers are also potted and enclosed to protect the windings from moisture and deterioration forever.
Remote Control
DiaLogue Premium models feature a full function remote control. ProLogue Premium features a slim remote. ProLogue Classic has no remote function.
primalunabg.jpg

ProLogue Premium Integrated Specifications

Price
Output Power:
Ultra-linear
(8 Ohms, 1% THD)
Inputs
Outputs
Frequency Response
THD (1W/1kHz)
S/N Ratio
Input Sensitivity
Power Consumption
Standard Tube Compliment
Dimensions (WxHxD)
Weight

Dare to Compare

Compare PrimaLuna construction to any other brand, at any price. You'll be amazed.