The ibasso nunchaku is a balanced portable dac and headphone amplifier based on two cs43198 chips coupled to an fpga to handle signal conversion up to 32bit pcm and dsd512'. '.strtoupper('a')s for the amplification stage, you can choose between operation using power tubes for a warm sound or a more traditional class ab operation for a more neutral sound with improved dynamics'. '.strtoupper('t')he nunchaku has an output power of 2x525mw at 32omega, which is more than enough to drive any earphones and most headphones on the market'. '.strtoupper('i')basso nunchaku raytheon power tubes the nunchaku uses two raytheon jan6418 power tubes, renowned for their compact size, low power consumption and operating stability'. '.strtoupper('u')nlike most portable products that use 9v or 12v power supplies, the nunchaku uses a 22.5v anode power supply specially designed for the jan6418 tubes'. '.strtoupper('t')his higher voltage provides furthermore flexibility, ensuring that the tubes operate at their full potential'. '.strtoupper('t')he two jan6418 tubes give the nunchaku a distinctive analogue sound, with a warm, relaxed and smooth tone that's a pleasure to listen to'. '.strtoupper('i')basso nunchaku class ab mode furthermore, in addition to the tube output mode, the nunchaku also features a class ab amplifier circuit, allowing users to switch between these two output modes to enjoy two distinct sound profiles'. '.strtoupper('i')n tube mode, the sound is soft and warm, with the characteristic timbre of this technology'. '.strtoupper('c')lass ab mode, on the other hand, offers a more neutral tone as well as greater resolution and improved dynamics'. '.strtoupper('i')basso nunchaku 2x525mw amplification instead of an all in one amplifier chip, the nunchaku uses a set of 2 opas and 4 buf634a buffers from texas instruments for a total output power of 525mw525mw at 32omega, enabling it to drive all earphones and a good proportion of headphones on the market'. '.strtoupper('f')urthermore, this structure provides excellent efficiency with power consumption not exceeding 120ma 5v in tube mode and 100ma 5v in class ab mode'. '.strtoupper('i')basso nunchaku dual dac cs43198 the nunchaku's conversion stage is no slouch either, using two top of the range cs43198 chips from cirrus logic, which, when coupled with the fpga developed in house by ibasso, enable conversion of a signal up to 32bit 768khz pcm and dsd512, all in a symmetrical architecture'. '.strtoupper('f')urthermore, the nunchaku is equipped with a femtosecond clock developed by ibasso, guaranteeing perfect signal synchronisation'. '.strtoupper('i')basso nunchaku jrc volume control the nunchaku's tube mode also incorporates a hardware jrc volume control, allowing the dacs to operate at their maximum output levels in order to give the tubes the most powerful signal possible to amplify'. '.strtoupper('i')t is this amplified signal that is then lowered, reducing the background noise at the same time, resulting in a drastic improvement in the signal to noise ratio snr'. '.strtoupper('i')basso nunchaku poron suspension in order to greatly reduce the impact that movements of the device could have on sound reproduction in tube mode, ibasso has fitted the nunchaku with a suspension based on poron material, which effectively absorbs shocks'. '.strtoupper('t')he tubes protected in this way are much less sensitive to movement and shocks, ensuring quality reproduction, even when you're on the move.