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Monitor Controller
SPL Phonitor One d 1902
699€
- Headphone amplifier with 32-bit DAC
- with Phonitor Matrix
- 2 analog inputs + USB port
- Burr-Brown OPA 2134 SoundPlusâ„¢ Operational Amplifier
The Phonitor One d from SPL is a headphone amplifier with two analog inputs and a USB input.
Analog input 1 has RCA sockets and is therefore unbalanced, while input 2 is designed as a balanced jack (TRS).
In addition, the d version of the headphone amplifier has a balanced jack output for studio monitors, for example.
A 12V power supply unit with 1.5A supplies the excellent amplifier with power.
In the secondary power supply, the voltage is transformed up to +/-17V and can therefore operate at a professional level of up to +22.5dB.
A low-drop operating voltage control ensures clean signals even when the maximum voltage is reached.
The special feature of the Phonitor One d is that the innovative Phonitor Matrix is installed.
With the help of a crossfeed, a sound image can be created that comes very close to that of speakers.
In the largest version, the parameters Crossfeed, Speaker Angle and Center Level are available.
In the Phonitor One d, the most commonly used setting of -1dB center level and 30° speaker angle is preset.
The continuously adjustable crossfeed generates crosstalk between the two channels (interaural level difference).
If the crossfeed is set to “Off”, the signal does not pass through the hysteresis circuit implemented by the relay.
The Phonitor One d features the AK4490 premium converter chip, which is equipped with AKM’s Velvet Sound® technology. Thanks to the low-distortion architecture of the DA converter, the finest details are audible. The chip enables a sampling rate of up to 768kHz PCM as well as the playback of DSD (Direct Stream Digital) up to a resolution of DSD4 or DSD256 (11.2 MHz). This qualifies the Phonitor One d for the highest resolution audio playback currently available.
Analog inputs & outputs (6.35mm stereo jack sockets + RCA sockets)
- Maximum input level: +22.5dBu
- Input impedance (Line 1, unsym.): 47kΩ
- Input impedance (Line 2, sym.): 20kΩ
- Common mode rejection: <60dB
- Output level (max.): +22dBu
- Line output impedance (balanced):
- Frequency response (-3 dB): 10Hz – 200kHz
- Noise (A-weighted, 0 dBu, 600 Ω load): -99dB
- THD + N (0 dBu, 10 Hz – 22 kHz, 600 Ω): 0.002%
- THD + N (0 dBu, 10 Hz – 22 kHz, 32 Ω): 0.013%
- Crosstalk (1 kHz): <75dB
- Dynamic range: 121,5dB
Headphone output (6.35 mm stereo jack socket)
- Source resistance: 20Ω
- Frequency response (-3dB): 10Hz – 200kHz
- Crosstalk (1kHz, 600Ω): -75dB
- THD + N (0dBu, 10Hz – 22kHz, 32Ω): 0.013%
- THD + N (0dBu, 10Hz – 22kHz, 600Ω): 0.002%
- Noise (A-weighted): -99dBu
- Blanking attenuation (600Ω): -99dB
- Max. Output power (600Ω): 2x 190mW
- Max. Output power (250Ω): 2x 330mV
- Max. Output power (47Ω): 2x 400mW
Headphone Amplifier
The Burr-Brown OPA 2134 SoundPlusâ„¢ operational amplifiers, specially developed for audiophile circuits, provide preamplification with extremely low noise and distortion of just 0.00008%.
By means of a FET stage, the operational amplifier achieves a slew rate of 20V/µs and thus ensures liveliness and playfulness.
Low-capacitance film capacitors are used as bypass capacitors to ensure precise transmission of the high-frequency signal components.
The bipolar transistors installed in the headphone amplifier’s output stage share positive and negative half-waves during amplification. This enables a higher output voltage than with a transistor that amplifies both half-waves. Thermal coupling of the output stage transistors ensures a consistent sound image.
PHONITOR MATRIX
Conventional
Phonitor Matrix
Channel crosstalk
| Weight | 2 kg |
|---|---|
| Dimensions | 38 × 27 × 7,5 cm |
| Headphone output | Yes |
| Channels | Stereo |
| Connections | RCA, sym. Jack, USB |
| Manufacturer | SPL |
| Host | USB |
| Bus Powered | No |
| Conversion | DA-Converter |
| Format | Standalone |
Product safety
Manufacturer information
SPL electronics GmbH
Sohlweg 80
41372 Niederkrüchten
Germany
Tel.: +49 (0) 2163 98340
Person responsible for the EU
Der Hersteller dieses Produkts befindet sich innerhalb der Europäischen Union und übernimmt die Rolle der verantwortlichen Person gemäß der EU-Produktsicherheitsverordnung. Für weitere Informationen wenden Sie sich bitte an den Hersteller.
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Q & A
SPL Phonitor One d 1902
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