Slide One

This unsurpassed technology is what we call VOLTAiR within our Professional Fidelity series. It lets you enjoy music on the same level as the mastering engineer.

Slide One
Slide One

This unsurpassed technology is what we call VOLTAiR within our Professional Fidelity series. It lets you enjoy music on the same level as the mastering engineer.

Slide One
previous arrow
next arrow

SPL Audio Phonitor se

Our entry model into the world of VOLTAiR headphone amplifiers.

The Phonitor se has the same audio signal amplification as its bigger brothers Phonitor x and Phonitor xe and therefore offers the same sound experience. The DAC768xs is optionally available.


Volume & Source Selection

The volume is adjusted with a milled all-aluminium rotary knob. The Alps RK27 “Big Blue” potentiometer provides a pleasant “spoon in honey” turning feeling.

In addition to an analog source, three other digital sources can be connected to the Phonitor se with the optional DAC.


Headphone Output with Power

The Phonitor se offers a 6.35 mm jack for connecting headphones with jack plug.

Up to 2 x 5 watts of output power is available at this socket. This allows even very power-hungry headphones such as magnetostats or electrostats to be driven effortlessly.


The Revolution

in the headphone amplifier is the Phonitor Matrix, with switchable crossfeed, that allows you to listen to music through headphones with the sound experience of listening through speakers.

The tiring super stereo effect and the exaggerated reproduction of reverberation and effects are a thing of the past.

Enjoy your music without fatigue and exactly as it should be heard.

The Phonitor Matrix in its largest expansion stage has three setting parameters: Crossfeed, Speaker Angle and Center Level.

In Phonitor se the Center Level is preset to -1 dB and the speaker placement Angle to 30°. These are the most common values.

The Crossfeed function determines the crosstalk of the channels, the so-called interaural level difference. There are two switch positions C1 and C2 for the intensity of the Crossfeed.



Phonitor Matrix


Everything you need to know about the Phonitor Matrix

Everything you need to hear about the Phonitor Matrix



The Phonitor se is equipped with gold-plated RCA sockets for the analog input.

The optional DAC768xs adds three more digital sources: USB Coax and Optical.

The Optional DAC768xs

The highly acclaimed AKM AK4490 Velvet Sound™ premium DAC chip is used as the converter chip in the optional digital-to-analogue converter, which thanks to its new architecture reproduces the finest sound details.
It converts PCM audio with a resolution of 32 bits and a sampling rate of up to 768kHz, which corresponds to 16 times the CD resolution. Direct Stream Digital is also supported up to a resolution of DSD4 or DSD256.


Analog input: RCA  
Maximum input gain 32.5 dBu
Input impedance 20 kΩ


Digital Inputs: DAC768xs (optional)  
Coaxial SPDIF (RCA), PCM sample rates 44.1/48/88.2/96/176.4/192 kHz
Optical SPDIF (Toslink F06), PCM sample rates 44.1/48/88.2/96/with Glass fibre <1m: 176.4/192 kHz
USB (B), PCM sample rates 44.1/48/88.2/96/176.4/192/352.8/384/705.6/768 kHz
USB (B), DSD over PCM (DoP), sample rates 2.8 (DSD64), 5.6 (DSD128), 11.2 (DSD256) MHz
0 dBFS calibrated to 15 dBu


Standard Headphones Output, 6.35 mm (1/4″) TRS Jack  
Wiring Tip = Left, Ring = Right, Sleeve = GND
Source impedance 0.18 Ω
Damping factor (40 Ω) 180
Frequency range (-3dB) 10 Hz – 300 kHz
Crosstalk (1 kHz) -90 dB
THD + N (10 Hz – 22 kHz, 0 dBu) 0.00091 %
Noise (A-weighted) -103 dBu
Output power (1 kHz, 1% THD, 600 Ω) 2 x 2.7 W
Output power (1 kHz, 1% THD, 300 Ω) 2 x 5 W
Output power (1 kHz, 1% THD, 32 Ω) 2 x 1 W
Dynamic range 135.5 dB


Internal Linear Power Supply with Shielded Toroidal Transformer  
Operating voltage for analog audio +/- 60 V
Operating voltage for relays and LEDs +12 V
Operating voltage for DAC768xs +7 V, +3.3 V


Mains Power Supply  
Mains voltage (selectable, see fuse chamber) 230 V AC / 50; 115 V AC / 60 Hz
Fuse for 230 V T 315 mA
Fuse for 115 V T 630 mA
Power consumption max. 30 VA
Stand-by power consumption < 0,3 W


Dimensions & Weight  
W x H x D (width x height incl. feet x depth) 278 x 57 x 330 mm / 11 x 2.24 x 13 inch
Unit weight 2,8 kg / 6.17 lb
Shipping weight (incl. packaging) 5 kg / 11.02 lb


Reference: 0 dBu = 0,775V. All specifications are subject to change without notice.

Seastone Product Line & Latest News

Brands that the company represents:

Latest News

Manger P2 -Omaperäinen saksalainen

Uudessa  2-2023 Hifimaailmassa sanotaan Manger P2 kaiuttimesta; Lähempää kuunneltuna Manger P2:n keski-ja yläalue soivat…

Fyne Audio Vintage Five

Like it’s larger siblings, this 5” compact bookshelf design celebrates the cabinet finery of…