SPL Phonitor One front-panel
Angle view of SPL's Phonitor One
SPL Phonitor One Audiophile Headphone Amplifier

Phonitor One is a concisely featured headphone amplifier built from highly desirable components and designed with audiophiles in mind.

£495.00 inc VAT
IN STOCK
SKU SP-S1PHO1
EAN 4260149322395

  • 2x balanced jack inputs
  • 2x mono RCA inputs
  • Burr Brown SoundPlus op amps
  • Class A/B power amp
  • Thermally coupled output transistors
  • On-board Phonitor Matrix
  • Crossfade control to manipulate crosstalk settings
  • Up to 22.5dB gain thanks to 17V operation

Inherited from some of SPL’s most revered high-end headphone amplifiers, Phonitor Matrix technology is a powerful tool that emulates the experience of mixing on studio monitors, translated to headphones.

Phonitor One features a center level preset hardcoded to -1 dB as well as a default speaker angle of 30 degrees to assume the most popular mixing settings.

On the Phonitor One's front panel, the Crossfeed function can be used to determine the crosstalk between channels, a technical metric known as "interaural level difference.”

The Phonitor One’s power amp output stage transistors are each thermally coupled to run coherently and contribute to a reliably consistent stereo image during listening.

True FET Preamp Stage
Phonitor One rear panel and front view

The Phonitor One’s preamp stage is powered by two Burr-Brown OPA 2134 SoundPlus op amps specially designed for audiophile circuits and emitting a low distortion value of just 0.00008%.

The preamp’s true FET stage allows for a slew rate  of 20V/µs resulting in a high-speed op amp and a jump in playback liveliness.

Class A/B Power Amp
SPL's Series One range features pristine conversion technology

The output stage of Phonitor One has been specifically designed as a push-pull configuration in class AB mode.

Bipolar transistors then share amplification of both positive and negative half waves to produce higher output voltage and gain, even when compared to Class A operation.

Image
Phonitor One from SPL's Series One range

Max Input +22.5 dBu
Common Mode Rejection < 60 dB
Source Impedance 20 Ω
Frequency Range 10 Hz - 200 kHz (-3 dB)
Noise -97 dBu (A-weighted, 600 Ω)
THD 0.013 % (0 dBu, 10 Hz – 22 kHz, 32 Ω)
Max Output 2 x 330 mW (250 Ω)
Crosstalk -75 dB (1 kHz, 600 Ω)
Dimensions 210 x 49.6 x 220 mm (WxHxD), 1.4kg