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    Our Products (1)

    Mass Kobo Model 475 Portable Headphone Amplifier

    Mass Kobo Model 475 Portable Headphone Amplifier

    Mass-Kobo's choice of current-mode signal has been around as long as Head-Fi has, and the portable, battery-powered, Model 475 calls upon such heritage.  Current-mode amplification eliminates the lag time that might otherwise occur when signal is transmitted in voltage, as it builds up at the capacitances in the circuit – current signal passes through unhindered by comparison, with speed and ease. By doing away with the issue of transmission delay in Model 475, Mass-Kobo virtually eliminates any of the harshness caused by the intermodulation distortion associated with high capacitance, solid-state circuits. [See Product Desc. For More] Model 475 presents music with an iron grip on your transducers, never allowing the slightest note out of control. Any trace of transient smear or note bleed vanishes, from the lowest bass to the highest highs, given the extraordinary damping factor current-mode delivers. Mass-Kobo presents your favourite music with a zeal and vibrancy that's accurate and still entertaining. Another effect of being unhindered by capacitance in the signal path means that huge signal bandwidth is possible, with phase response excellently preserved in the human hearing range for startlingly life-like dynamics, impactful bass and realistic portrayal of musical images.  Indeed, to hear current-mode is to hear a precision to music not encountered before in a conventional circuit, and Mass-Kobo build Model 475 as testament to such a topology. Current-mode technology excels the more it detects a dead short, so Model 475 only works more happily when presented with sub-30ohm loads from Audeze's LCD-5, Dan Clark Audio's Stealth, Expanse and E3, plus HIFIMAN's latest flagship generation. Feed Mass-Kobo only the finest signal. Keep your whole chain working in current-mode with Questyle Audio's CMA18P and M15i. From a player, Cayin Audio's N7 has the consummate sound quality, and more importantly line output stage, necessary to drive Model 465's low-impedance current-mode input stage Meanwhile, browse the rest of Mass-Kobo's range to see what you get higher or on the go here – or view the rest of our amplifiers here.

    $2,399

    Our Price | $2,399

    Mass Kobo Model 465 Headphone AmplifierMass Kobo Model 465 Headphone Amplifier

    Mass Kobo Model 465 Headphone Amplifier

    The ultimate Mass-Kobo amplifier Masuda-san knows how to build. Model 465 is a princely statement of amplification, prestige and status. Build times up to four months. Demo by appointment only. Conceived to bring the best out of Mass-Kobo's current-mode amplification, Model 465 is built personally by Masuda-san in Shizuoka, Japan. There, his hand-selection of the top one per cent of matched discrete parts for incredible open-loop gain tolerances yield incredible sound quality. That, in addition to a huge dual-mono power supply and voltage rails that means Mass-Kobo's flagship can swing up to 32 volts for large massed orchestral music peaks into difficult loads, and you have Model 465 as the perfect option to drive into today's incredibly demanding flagship headphone models. [See Product Desc. For More] Mass-Kobo's choice of current-mode signal has been around as long as Head-Fi has.  Current-mode amplification eliminates the lag time that might otherwise occur when signal is transmitted in voltage, as it builds up at the capacitances in the circuit – current signal passes through unhindered by comparison, with speed and ease. By doing away with the issue of transmission delay in Model 465, Mass-Kobo virtually eliminates any of the harshness caused by the intermodulation distortion associated with high capacitance, solid-state circuits. Model 465 presents music with an iron grip on your transducers, never allowing the slightest note out of control. Any trace of transient smear or note bleed vanishes, from the lowest bass to the highest highs, given the extraordinary damping factor as a perfect voltage source current-mode delivers. Mass-Kobo presents your favourite music with a zeal and vibrancy that's accurate and still entertaining. Another effect of being unhindered by capacitance in the signal path means that huge signal bandwidth is possible. Model 465 runs flat from 10hz to 100Khz, with phase response excellently preserved in the human hearing range for startlingly life-like dynamics, impactful bass and realistic portrayal of musical images.  Indeed, to hear current-mode is to hear a precision to music not encountered before in a conventional circuit, and Mass-Kobo build Model 465 as testament to such a topology. Current-mode technology excels the more it detects a dead short, so Mass-Kobo only works more happily when presented with sub-30ohm loads from Audeze's LCD-5, Dan Clark Audio's Stealth, Expanse and E3, plus HIFIMAN's latest flagship generation – especially when you consider the kind of voltage swing Model 465 backs that up with. The pairing with Susvara needs no introduction either. Feed Mass-Kobo only the finest signal. While Matrix Audio's Element X2 Pure and dCS Data Conversion Systems' Lina have the consummate sound quality, and more importantly analog output stages, necessary to drive Model 465's low-impedance current-mode input stage, why not keep your whole chain working in the same topology with Questyle Audio's CMA15. Otherwise, browse the rest of Mass-Kobo's range that get more sane in price but no less insane in sound quality here – or view the rest of our amplifiers here.

    $23,999

    Our Price | $23,999

    Mass Kobo Model 433 Headphone AmplifierMass Kobo Model 433 Headphone Amplifier

    Mass Kobo Model 433 Headphone Amplifier

    A modern Mass-Kobo built for every budding audiophile coming of age. Model 433 is the Goldilocks of Masuda-san's range, able to offer something to everyone.  Model 433 is built personally by Masuda-san in Shizuoka, Japan. There, his hand-selection of the top one per cent of matched discrete parts for incredible open-loop gain tolerances yield incredible sound quality. Inspired by the Model 394 II, Model 433 offers as little as possible in the way of compromises for those seeking the full Mass-Kobo experience. [See Product Desc. For More] Mass-Kobo's choice of current-mode signal has been around as long as Head-Fi has, and Model 433 calls upon such heritage. Current-mode amplification eliminates the lag time that might otherwise occur when signal is transmitted in voltage, as it builds up at the capacitances in the circuit – current signal passes through unhindered by comparison, with speed and ease. By doing away with the issue of transmission delay in Model 433, Mass-Kobo virtually eliminates any of the harshness caused by the intermodulation distortion associated with high capacitance, solid-state circuits. Model 433 presents music with an iron grip on your transducers, never allowing the slightest note out of control. Any trace of transient smear or note bleed vanishes, from the lowest bass to the highest highs, given the extraordinary damping factor as a perfect voltage source current-mode delivers. Mass-Kobo presents your favourite music with a zeal and vibrancy that's accurate and still entertaining. Another effect of being unhindered by capacitance in the signal path means that huge signal bandwidth is possible. Model 433 runs flat from 10hz to 100Khz, with phase response excellently preserved in the human hearing range for startlingly life-like dynamics, impactful bass and realistic portrayal of musical images.  Indeed, to hear current-mode is to hear a precision to music not encountered before in a conventional circuit, and Mass-Kobo build Model 433 as testament to such a topology. Current-mode technology excels the more it detects a dead short, so Model 433 only works more happily when presented with sub-30ohm loads from Audeze's LCD-5, Dan Clark Audio's Stealth, Expanse and E3, plus HIFIMAN's latest flagship generation – particularly considering that's backed up by nearly 20 volts of swing for sudden massed orchestral bursts. Feed Mass-Kobo only the finest signal. Keep your whole chain working in current-mode with Questyle Audio's CMA15. Meanwhile, browse the rest of Mass-Kobo's range to see what you get higher or on the go here – or view the rest of our amplifiers here.

    $3,399

    Our Price | $3,399