ProLogue Classic Features Comparison
 

ProLogue Premium

ProLogue Classic

Price
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USB Digital Input
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USB Digital Input
USB digital input allows using your computer for storage and playback of your music with all the benefits of features like playlists and easier access to your whole music library. Rather than just add in an USB input as an afterthought, PrimaLuna engineers searched endlessly looking for the best-sounding USB interface we could find. We found the hiFace, made by M2Tech in Italy. This USB input converts the jitter-filled USB digital signal to S/PDIF, dramatically improving the digital signal quality before it even gets to the SuperTubeClocks. This USB input is a true high-resolution digital input, so you can play back your high resolution digital files, up to 24-bit/192kHz.
 
Dual Mono Power Transformers  
Power Transformer Protection  
SuperTubeClocks
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SuperTubeClock
An ultra-low jitter clocking device that replaces the solid-state oscillator with a vacuum tube. Yields incredible detail retrieval and dynamics throughout the entire audio spectrum.

Why use two? The addition of the second clock further reduces jitter, resulting in greater detail and resolution.
Dual Mono Topology
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Dual Mono Topology
Per channel dedicated tubes. While it is fine to use a single tube as a buffer for both channels and claim your CD player is "tube", it can't be compared to the PrimaLuna design and what it does for the music.
Vacuum Tube Rectified
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Vacuum Tube Rectified
Vacuum tube rectified power supply adapted from the award-winning ProLogue preamps incorporates eleven separate power supply regulation circuits. Tube rectification is synonymous with organic sound, especially with CD players being known as sounding like "a computer".
Point-to-Point Wiring
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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.
Premium Parts
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Premium Parts
Premium parts including polypropylene coupling caps, triple pi power supply filters, custom designed isolation transformers which separate the analog and digital devices, resulting in decreased signal degradation and improved sonics from top to bottom. Many CD players weigh in at ten pounds or less. Our CD players weigh 33 and 25 pounds!
Remote Control
24bit/192kHz Upsampling
Premium DAC
Extended Tube Life
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.
Vacuum Tube Rectified - Dual Mono Design
Vacuum tube rectified power supply adapted from the award-winning ProLogue preamps incorporates eleven separate power supply regulation circuits. Tube rectification is synonymous with organic sound, especially with CD players being known as sounding like "a computer".
USB Digital Input
USB digital input allows using your computer for storage and playback of your music with all the benefits of features like playlists and easier access to your whole music library. Rather than just add in an USB input as an afterthought, PrimaLuna engineers searched endlessly looking for the best-sounding USB interface we could find. We found the hiFace, made by M2Tech in Italy. This USB input converts the jitter-filled USB digital signal to S/PDIF, dramatically improving the digital signal quality before it even gets to the SuperTubeClocks. This USB input is a true high-resolution digital input, so you can play back your high resolution digital files, up to 24-bit/192kHz.
Dual Mono Topology
Per channel dedicated tubes. While it is fine to use a single tube as a buffer for both channels and claim your CD player is "tube", it can't be compared to the PrimaLuna design and what it does for the music.
SuperTubeClock
An ultra-low jitter clocking device that replaces the solid-state oscillator with a vacuum tube. Yields incredible detail retrieval and dynamics throughout the entire audio spectrum.

Why use two? The addition of the second clock further reduces jitter, resulting in greater detail and resolution.
Premium Parts
Premium parts including polypropylene coupling caps, triple pi power supply filters, custom designed isolation transformers which separate the analog and digital devices, resulting in decreased signal degradation and improved sonics from top to bottom. Many CD players weigh in at ten pounds or less. Our CD players weigh 33 and 25 pounds!