{"product_id":"spl-audio-phonos-duo","title":"SPL Audio Phonos Duo","description":"\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-Phonos-Duo-1-1-scaled-rge5jnhwd63wplhiqwqpmiiql8bbpcl7h3edkc7hfk.webp\" title=\"SPL Audio Phonos Duo (1) (1)\" alt=\"SPL Audio Phonos Duo (1) (1)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\u003ch1\u003ePhonos duo\u003c\/h1\u003e\t\t\t\t\n\t\t\u003cp\u003eThe RIAA Phono Preamplifier – Twice as nice\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe SPL phono preamplifier Phonos duo expands the established\u003c\/p\u003e\u003cp\u003eSPL phono preamplifier Phonos with a pair of balanced stereo inputs and outputs.\u003c\/p\u003e\u003cp\u003ePhonos duo is thus even more versatile.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eWhether moving magnet (MM) or moving coil (MC) cartridge systems –\u003c\/p\u003e\u003cp\u003ethe SPL VOLTAiR technology and the RIAA filter in the legendary Douglas-Self design\u003c\/p\u003e\u003cp\u003eform the fundament for an outstanding phono sound.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-Phonos-Duo-1-rge5ker1mtrccjxdr5cyeqqayaf3n7mpqi02s31h4w.webp\" title=\"SPL Audio Phonos Duo (1)\" alt=\"SPL Audio Phonos Duo (1)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGreat design – a must have\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eVisually, the SPL Phonos duo Phono Preamplifier fits perfectly into the SPL HiFi line\u003c\/p\u003e\u003cp\u003eProfessional Fidelity – and is of course available in the three basic colors black, red or silver.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"300\" height=\"291\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_10_Phonos-duo-cartridge-300x291.jpg\" alt=\"imgi_10_Phonos-duo-cartridge\" title=\"imgi_10_Phonos-duo-cartridge\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eMM \u0026amp; MC\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eThere are two cartridge systems for turntables:\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eMoving Magnet (MM) and Moving Coil (MC).\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eMoving Magnet\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eMoving magnet cartridges generate a voltage by moving a magnet between copper coils. In order to achieve the best possible linearity of the frequency and phase response, the capacitance is modified to adjust the cartridge.\u003c\/p\u003e\u003cp\u003ePhonos duo offers six different capacities for this adjustment:\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e12 pF, 47 pF, 100 pF, 150 pF, 220 pF und 330pF.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"273\" height=\"300\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_11_Phonos-duo-mm-273x300.jpg\" alt=\"imgi_11_Phonos-duo-mm\" title=\"imgi_11_Phonos-duo-mm\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eMC or MM ?\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eMoving coil cartridge systems are commonly regarded as the more audiophile systems, as they allow a faster and therefore a finer cartridge due to their low mass. They bring out the finest nuances of the record. The output voltage of a moving coil cartridge system is extremely low at just a few hundred microvolts and is therefore more sensitive to noise and induced hum.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe very low output voltage makes preamplifier design a challenge, because it has to be pre-amplified extremely noise-free. With up to 70 dB preamplification, Phonos duo offers one of the most powerful phono preamplifiers for moving coil systems. Thanks to SPL 120V technology, Phonos duo amplifies extremely low-noise, linear and phase-locked.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eMoving coil cartridges have a very low inductance and impedance.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis means that the effects of cable capacitance (from the cartridge to the preamplifier) are not that significant. The impedance, however, is the relevant parameter here and can be set in six positions on the Phonos duo. The manufacturers specify the impedances of the cartridges. These should be followed as closely as possible.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eMoving magnet cartridges, on the other hand, are more rugged and often less expensive.\u003c\/p\u003e\u003cp\u003eThe greater mass of the moving magnets causes more inertia, which results in less precise reading\u003c\/p\u003e\u003cp\u003eof the record. However, modern moving magnet systems also use neodymium magnets, which have\u003c\/p\u003e\u003cp\u003ea significantly lower mass. Such moving magnet systems can also keep up with\u003c\/p\u003e\u003cp\u003esome moving coil systems in terms of accuracy.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eCapacitance plays a significant role with moving magnet cartridges.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThis means that the effects of cable capacitance (from the cartridge to the preamplifier)\u003c\/p\u003e\u003cp\u003ecan‘t be ignored here. The capacity for moving magnet cartridges can therefore be set to six values\u003c\/p\u003e\u003cp\u003eon the Phonos duo to be optimally adapted to the system.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/imgi_13_spl-2450-phonos-duo-front-left-wood-rge6e0nzctfa4mevudrcuyx79kvx7nxaegnwp1ewao.jpg\" title=\"imgi_13_spl-2450-phonos-duo-front-left-wood\" alt=\"imgi_13_spl-2450-phonos-duo-front-left-wood\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/SPL-Audio-Phonos-Duo-2-rge6ifiq975jw5i06wrivqu1bgyy2wz9n8lqnsw000.jpg\" title=\"SPL Audio Phonos Duo (2)\" alt=\"SPL Audio Phonos Duo (2)\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eFree choice – balanced or unbalanced\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003ePhonos duo offers two pairs of stereo inputs and outputs.\u003c\/p\u003e\u003cp\u003eA pair of balanced inputs and outputs with XLR inputs and outputs and a pair\u003c\/p\u003e\u003cp\u003eof unbalanced inputs and outputs with RCA connectors.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"162\" height=\"300\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_15_Phonos-duo-xlr-rca-162x300.jpg\" alt=\"imgi_15_Phonos-duo-xlr-rca\" title=\"imgi_15_Phonos-duo-xlr-rca\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eThe INPUT switch on the front of the Phonos duo can be used to switch between the two stereo inputs.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe output signal is always present in parallel at both output – regardless of the selected input.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"300\" height=\"177\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_16_Phonos-duo-output-300x177.jpg\" alt=\"imgi_16_Phonos-duo-output\" title=\"imgi_16_Phonos-duo-output\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/imgi_58_spl-2450-phonos-duo-makro-2048x1214-1-rge6ruuhj57x56zvy4xgzhh7gf6eanam99fc6joveo.jpg\" title=\"imgi_58_spl-2450-phonos-duo-makro-2048×1214\" alt=\"imgi_58_spl-2450-phonos-duo-makro-2048x1214\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eDouglas Self Design\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe RIAA equalization of the Phonos was developed according to the recommendations of Douglas Self.\u003c\/p\u003e\u003cp\u003eIdea: Many small capacities instead of a few large capacities.\u003c\/p\u003e\u003cp\u003eAdvantages: The capacitors charge and discharge faster, which results in better resolution and faster impulse response.\u003c\/p\u003e\u003cp\u003eOnly audiophile Styroflex capacitors are used in the entire RIAA equalizer.\u003c\/p\u003e\u003cp\u003eAbout the person: Douglas Self is a British electronics engineer with a strong penchant for audio. He holds honorary degrees from Cambridge University and teaches psychoacoustics at the University of Sussex.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"982\" height=\"636\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_21_Phonos_innen-e1643971212897.jpg\" alt=\"imgi_21_Phonos_innen-e1643971212897\" title=\"imgi_21_Phonos_innen-e1643971212897\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eRIAA Equalization\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"911\" height=\"682\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_20_RIAA-Filter-Curve.jpg\" alt=\"imgi_20_RIAA-Filter-Curve\" title=\"imgi_20_RIAA-Filter-Curve\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003c!--StartFragment --\u003e\u003cp\u003eRIAA equalization is a specification for the recording and playback of records proposed by the Recording Industry Association of America (RIAA).\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe RIAA equalization curves introduced a global de facto industry standard for vinyl records in 1954.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eRIAA equalization uses pre-emphasis to reduce low frequencies and boost high frequencies when the record is cut (blue RIAA curve).\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eThe bass is reduced by up to 20 dB to provide more space and longer record play time.\u003c\/p\u003e\u003cp\u003eThe high frequencies are boosted by up to 25 dB to increase the signal-to-noise ratio between the noise of the record media to the audio signal.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eDuring playback, exactly the opposite happens in the Phonos. The de-emphasis filter (red RIAA curve) compensates for the pre-emphasis and the result\u003c\/p\u003e\u003cp\u003eis a linear frequency response.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe VOLTAiR Technology\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThe 120V technology is our reference technology. The 120V technology is unique in the world. It operates at a DC voltage of 120 volts. This is four times that of IC-based semiconductor op-amps. In our Professional Fidelity series, we refer to this unsurpassed technology as VOLTAiR technology.\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/elementor\/thumbs\/imgi_68_Phonitor-se-innen-2048x1368-1-rgc3oajyau9p84s2c5t0qyptqlifmq6gr160l5jj0g.jpg\" title=\"imgi_68_Phonitor-se-innen-2048×1368\" alt=\"imgi_68_Phonitor-se-innen-2048x1368\" loading=\"lazy\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\u003cp\u003eThe highest possible audio quality requires the highest possible audio operating voltage.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eThe 120V technology works with +\/-60 V. To be able to handle such a high voltage, we have developed special proprietary operational amplifiers that can operate with a DC voltage of +\/-60 V: the SPL 120V SUPRA operational amplifiers. This high voltage would destroy conventional components and operational amplifiers.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe 120V technology achieves exceptional technical specifications and sonic benefits. Technically, in terms of dynamic range, signal-to-noise ratio and headroom. Sonically, in terms of richness of detail and an absolutely relaxed listening experience. \u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eBy the way, the “120V” in the name of the technology has nothing to do with the local mains voltage from the mains power socket. This is about the operating voltage inside the device with which the audio signals are processed.\u003c\/p\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003eThe mains voltage from the mains power socket is transformed to the required secondary voltage in the device’s internal linear power supply with toroidal transformer. Rectifiers convert this AC voltage into DC voltage required in the audio device.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e \u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003eComparison\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003c!--StartFragment --\u003e\u003cp\u003eMost audio devices work with an internal operating voltage of +\/-15 volts and can thus process a maximum input level of +21.5 dBu. If a DAC, for example, has an output level of +22 dBu at 0 dBFS, level peaks of the music material would already cause overloads in the input stage of the device. All components in the audio device often operate at their limits. The result is an unsteady sound that causes stress and faster ear fatigue.\u003c\/p\u003e\u003c!--EndFragment --\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003eSPL devices with VOLTAiR technology can handle input levels of +32.5 dBu thanks to the higher internal operating voltage of +\/- 60 volts – thus offering 12 dB more headroom. All components consequently operate continuously in the optimum operating range. The result is a very pleasant, natural and relaxed sound experience. So you can enjoy your music in every detail.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--StartFragment --\u003e\u003c\/p\u003e\u003cp\u003eThese diagrams clearly show the superiority of the VOLTAiR technology in comparison to other circuits with lower, common operating voltages.\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\u003cp\u003e\u003c!--EndFragment --\u003e\u003c\/p\u003e\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1048\" height=\"1080\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_35_120V-Diagramm_Dynamikumfang_EN.png\" alt=\"imgi_35_120V-Diagramm_Dynamikumfang_EN\" title=\"imgi_35_120V-Diagramm_Dynamikumfang_EN\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1048\" height=\"1080\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_36_120V-Diagramm_Maximalpegel_EN.png\" alt=\"imgi_36_120V-Diagramm_Maximalpegel_EN\" title=\"imgi_36_120V-Diagramm_Maximalpegel_EN\"\u003e\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\u003cimg width=\"1048\" height=\"1080\" src=\"https:\/\/suhavimart.com\/wp-content\/uploads\/2025\/12\/imgi_37_120V-Diagramm_THD_NFarbe_EN-1.png\" alt=\"imgi_37_120V-Diagramm_THD_NFarbe_EN-1\" title=\"imgi_37_120V-Diagramm_THD_NFarbe_EN-1\"\u003e","brand":"Sur Sargam","offers":[{"title":"Default Title","offer_id":52663880548649,"sku":null,"price":299705.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0682\/0750\/9801\/files\/SPL-Audio-Phonos-Duo-2-scaled.webp?v=1770878583","url":"https:\/\/sursargam.com\/products\/spl-audio-phonos-duo","provider":"Sur Sargam","version":"1.0","type":"link"}