Fits on your desktop- sounds like a tower.
True to the motto Number One In Sound, SPL has developed a new product line that combines the sound of their big devices with a desktop-friendly design and an affordable price for the ambitious user.
The first two Series One devices, Phonitor Oneand Phonitor One d–both headphone amplifiers, will be launched on October 05, 2020.More devices will follow soon.
The SPL headphone amplifier Phonitor One allows high-quality monitoring of analog sources. Thanks to the Phonitor Matrix with Crossfeed control, you can create mixes that sound as if they were mixed on speakers. An analog volume controller, an aluminum front panel and a high-end metal housing show that no compromises have been made in terms of quality. The Phonitor One d also features an internal DA converter with top specifications. PCM signals up to 768 kHz/32Bit and Direct Stream Digital up to DSD4 playback leave nothing to be desired. A balanced stereo line output predestines the Phonitor One d to use it as a stand-alone DAC.
”I am excited that with the Series One we have developed a new product line for the ambitious sound creator. It was a challenge to bring the famous SPL sound to this series –I'm really proud of the result –it's something you can hear and see.“
Jens Gronwald, Developer
The Preamplifier Stage
Two Burr-Brown OPA 2134 SoundPlus™ operational amplifiers provide the pre-amplification. These are specially designed for audiophile circuits and are characterized by extremely low noise and minimal distortion of only 0.00008%.
Thanks to a true FET stage, the OPA 2134 achieves a slew rate of 20V/μs, making it a high-speed operational amplifier. This has an immediate positive effect on the liveliness of the playback.
The first two Series One devices, Phonitor Oneand Phonitor One d–both headphone amplifiers, will be launched on October 05, 2020.More devices will follow soon.
The SPL headphone amplifier Phonitor One allows high-quality monitoring of analog sources. Thanks to the Phonitor Matrix with Crossfeed control, you can create mixes that sound as if they were mixed on speakers. An analog volume controller, an aluminum front panel and a high-end metal housing show that no compromises have been made in terms of quality. The Phonitor One d also features an internal DA converter with top specifications. PCM signals up to 768 kHz/32Bit and Direct Stream Digital up to DSD4 playback leave nothing to be desired. A balanced stereo line output predestines the Phonitor One d to use it as a stand-alone DAC.
”I am excited that with the Series One we have developed a new product line for the ambitious sound creator. It was a challenge to bring the famous SPL sound to this series –I'm really proud of the result –it's something you can hear and see.“
Jens Gronwald, Developer
The Preamplifier Stage
Two Burr-Brown OPA 2134 SoundPlus™ operational amplifiers provide the pre-amplification. These are specially designed for audiophile circuits and are characterized by extremely low noise and minimal distortion of only 0.00008%.
Thanks to a true FET stage, the OPA 2134 achieves a slew rate of 20V/μs, making it a high-speed operational amplifier. This has an immediate positive effect on the liveliness of the playback.
In addition, low capacitance film capacitors are installed in the signal path as bypass capacitors of the coupling capacitors, which ensures a more precise transmission of the high-frequency signal components.
The excellent Panasonic ‘Electric Double Layer’ gold electrolytic capacitors are used as coupling capacitors. They offer the highest storage capacity of all capacitor technologies.
The Power Amplifier
The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves.
The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image.
The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when operating low-impedance headphones.
The Revolution
in the headphone amplifier is thePhonitor Matrix, with adjustable crossfeed, thanks to which you can create mixes with headphones that sound the same on speakers.
The Phonitor Matrix in its largest expansion stage has three setting parameters: Crossfeed, Speaker Angle and Center Level.
In the Phonitor One d, the center level is preset to -1 dB and the speaker angle to 30°. These are the most commonly used values.
The crossfeed function determines the crosstalk of the channels, the so-called interaural level difference. The intensity of the crossfeed is fully variable.
At the beginning of the control path the function is not in the audio path. It is only switched on by adding it via relay (hysteresis circuit). The audio signal therefore does not pass through the crossfeed stage if this is not desired.
The excellent Panasonic ‘Electric Double Layer’ gold electrolytic capacitors are used as coupling capacitors. They offer the highest storage capacity of all capacitor technologies.
The Power Amplifier
The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves.
The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image.
The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when operating low-impedance headphones.
The Revolution
in the headphone amplifier is thePhonitor Matrix, with adjustable crossfeed, thanks to which you can create mixes with headphones that sound the same on speakers.
The Phonitor Matrix in its largest expansion stage has three setting parameters: Crossfeed, Speaker Angle and Center Level.
In the Phonitor One d, the center level is preset to -1 dB and the speaker angle to 30°. These are the most commonly used values.
The crossfeed function determines the crosstalk of the channels, the so-called interaural level difference. The intensity of the crossfeed is fully variable.
At the beginning of the control path the function is not in the audio path. It is only switched on by adding it via relay (hysteresis circuit). The audio signal therefore does not pass through the crossfeed stage if this is not desired.