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  SPL Phonitor Headphone Monitoring Amplifier System

SPL Phonitor
SPL Phonitor
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List Price: $2,199.00
Our Price: $1,999.00
FEA Savings: $200.00

Availability: Usually Ships in 3 to 5 Days
Product Code: 9999-04541




SPL Phonitor Headphone Monitoring Amplifier System Details

The SPL Phonitor design is SPL's high-end interpretation for what a complete headphone amplifier should be. A well chosen system of Phonitor and headphones can by and large replace loudspeakers and offers all that is required for a successful session long listening periods without ear fatigue. We therefore refer to the Phonitor as a headphone monitoring amplifier system.

The basis for this high-end development is SPL's proven 120 volts reference technology based on handmade operation amplifiers (or, Op Amps). 120 volts corresponds to approximately four times the performance of standard analogue audio semiconductor technologies and twice that of the most powerful designs. Through such 120 volts circuitry and processing, SPL reaches performance levels far beyond conventional designs in dynamic range and distortion levels, and the main technical specifications in music reproduction exceeds all known analogue or digital standards.

In addition to its standard monitoring functions the Phonitor offers new controls such as “Crossfeed“, “Speaker Angle“ and “Center Level“. These are the essential parameters that create the width, balance and overall space within a listening field and how we recognize them coming from the loudspeaker. Crossfeed simulates the frequency dependent interaural level differences from both channels. Speaker Angle determines the stereo width caused by frequency dependent interaural time differences. Center Level regulates the balance between phantom centre and L/R stereo signals.

Aside from its outstanding abilities as a loudspeaker substitute, the Phonitor offers well equipped studios a fully functional monitoring alternative. In addition one can take along the Phonitor into an unfamiliar studio or production environment that always provides the engineers or producers own monitor sound. Furthermore, with the Phonitor one can simply enjoy music as it was originally mixed, namely for playback over loudspeakers.

SPL Phonitor Headphone Monitoring Amplifier System Specifications


  • Frequency Response: ‹10Hz to ›200kHz (-3dB)
  • CMR:-80dBu(@1kHz, 0dBu input level/unity gain)
  • Crosstalk @ 1kHz: -67dB
  • THD: 0,005% (@ 1kHz and 0dBu input level/unity gain
  • Noise (A-weighted): -97dBu
  • Dynamic Range: 129,5dB(@ connection with 600 Ohms Impedance)


  • (XLR connections, electronically balanced)
  • Impedance: ca. 20 Ohms balanced/ca. 10 Ohms unbalanced
  • Maximum Input Level: +24dBu


  • XLR Connections: Input thru, electronically balanced
  • Headphone Output: 6,3 mm stereo TRS connection
  • Pin Wiring Tip = left, Ring = right, Shaft = GND, Impedance: 9 Ohms

Power Amplifier

  • Max. Output Performance:
  • 1,7W (+32,2dBm) @ 1 kHz and 600 Ohms connection
  • 360mW (+25,6dBm) @ 1 kHz and 30 Ohms connection

Display Elements

  • VU Meter: Input levels from -20dB to +5dB
  • Signal LED: Input signals from -22dBu
  • Overload LED: Displays input overload from +21dBu

Power Supply

  • Voltages: 230V AC, 50Hz/120V AC, 60Hz
  • Power Consumption: max 23,7VA
  • Fuses (slow blow): 200-240V AC: 500mA/100-120V AC: 1A
  • H x W x D (mm): 106 x 216 x 393 (H w/o Feet 88mm/2U)
  • Weight: 4,05kg

0dBu = 0,775V. Subject to change without notice.

SPL Phonitor Headphone Monitoring Amplifier System Downloads

SPL Phonitor Headphone Monitoring Amplifier System Reviews

What We Think - SPL Phonitor Review

"The SPL Phonitor is a pretty incredible tool for monitoring, mixing, or just plain enjoying music - especially when you consider that everything that it does, it does without the aid of any kind of digital processing. Headphone monitoring has always bothered me since it never correlates directly what you hear in the stereo sweet-spot with open air speakers; there is simply no natural crosstalk from the left monitor into the right ear, and so forth. However, I was really eager to see what the Phonitor could do to change my mind about using headphones when mixing.

"Setting it up with a CD player and some old favorites (everything from Debussy's 'Nocturnes' to Pink Floyd's 'The Final Cut' to Oliver Nelson's classic 'The Blues & The Abstract Truth, wrapping up with some Fela Kuti - Stalemate) I engaged the controls, halfway expecting to hear sweeping and over the top changes. This was not what I experienced. However, the more time I spent with it, making minute adjustments to the settings and really honing in on the changes, the purpose of the Phonitor became apparent - it is most certainly a professional's tool for adjusting the virtual listening environment. Basically, you begin by adjusting your speaker angle. I found that I typically hovered at about 30, 40, and 55 degree settings, eventually settling on 40-degrees (Your Mileage May Vary). Then you can engage the Crosstalk feature. This feature helps you to adjust just how powerful the crosstalk feed is from side to side, but then the Center Level attenuator allows you to drop the increased center level to balance out the L-C-R spectrum. Also, the Phonitor really lets you do everything you can do with a proper professional monitor controller, such as monitoring in Mono (checking phase, for example) to isolating both the Left and Right signals discretely, and more if you consider that you can change polarity on either the L or R signals. Add to this a -20dB Dim switch as well as the ability to adjust the metering range and whether your metering is VU or PPM, and you have a very powerful monitoring device.

"The SPL Phonitor is really a fantastic option for the recording musician who has a home studio in an environment where a traditional monitoring setup would be impractical to employ most of the time; meaning anyone with a family or someone in an apartment, or whoever needs to work when everyone else is asleep. But it's also a valuable tool for those who prefer to work with cans. The effect is more pronounced with an open-back set of headphones - which really should only be used when mixing or simply listening due to the increased potential for bleed into a microphone if recording vocals. Obviously, the better the headphones you use, the more you'll enjoy the Phonitor. Again, the effect is sort of subtle. If you don't hear it, then you're not listening deep enough. And if you don't 'get it', then try to understand that refinement and subtlety can be very valuable things to someone aware of what they need. As just a straight headphone amp, I found that I was listening far longer than I was used to. There was simply less ear fatigue. Though you'll need to be careful. The "gee whiz" factor is pretty high with this. So, you'll probably find yourself listening louder. So, be mindful of this and turn it down - no need to damage your hearing. Plus, this thing is a rocket. TONS of available gain and headroom. It's a baaaaaad, baaaaaad man... man."

Alan Moon - Front End Audio

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Average Customer Review 5 of 5 | Total Reviews: 1 | Write a review!

  0 of 0 people found the following review helpful:
Its sounds amazing October 10, 2013
Reviewer: Jordan Postrel from Miami Beach, FL United States  
Everything is so clear and crisp its a joke. This is one of the best studio investments i've ever made. You can really zone in on your stereo image with this guy to paint that picture in your head

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