![]() Without adding cheaply-built, signal degrading adapters to your balanced connections to make something fit, even your flagships can be juiced to the max potential, signal integrity guaranteed via direct sockets soldered to PCB. HiBy designed a true-balanced differential amplifier to further improve R5II's linearity, and you can count on common-mode rejection at its best whenever you plug in via 2.5mm or 4.4mm. ![]() ![]() That ensures individual transistors are working in optimum condition.ĭistortion and noise are kept low, without resorting to the excessive use of negative feedback. Small signal accuracy in the DAC and gain stage is key, because this flows on to a series of eight discrete dual bipolar transistors working in pure Class A.ĭifferentiating itself from so many others who use op-amp ICs with inordinate amounts of gain, R5II's open-loop linearity remains excellent before application of feedback, owing to its Class A bias. You'll see that we're already discussing R5II as a much higher-end offering than it is. What's special about the ES9219C is that it grants R5II access to its on-chip analog volume control – the baby of HiBy's bunch attenuates volume in the analog domain granting much better signal-to-noise performance than the average competitor's lossy digital volume control. There's a trademark HiBy accuracy to frequency response too, coloured yet always correct.ĭual ESS Technology ES9219Cs supply the usual precision as a decoding backbone, allowing you to play back Apple Music Hi-Res Lossless, 16X Tidal Masters and Spotify with no shortage of mobile fidelity. Never mind that beginner DAPs have sounded good for the longest time – HiBy build R5II to sound great and punch way above its weight. Class A shows up in the sound, with a sense of vibrancy and vigour delivering notes with charged energy. There was nothing of note for Twister6 to dislike! It leapt immediately onto Headfonia's Recommended Buys list. HiBy Music disregard this Android 8 music player's entry-level status, taking it to giant-killing heights by building it with a Class A discrete transistor balanced amplifier outputting in 2.5mm and 4.4mm. It's devices like R5II that really change the game.
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