HiBy RS2 R2R Portable Music Player

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PureAudio System + Darwin Architecture, taste the raw emotions of pure music! Dual MicroSD card slots and up to 4TB storage supported, all your music ever in the palm of your hand. The retro design language is melded into the tough bold lines of the R family. 

Seek Splendid Sound

PureAudio player with Darwin audio architecture

Purely audiophile

Running on the PureAudio HiByOS, the RS2 also enjoys targeted optimization of system-level audio processing, providing a clean, pure audio playback pathway, and ensuring a pure audiophile music experience.

Old-school audiophile

Retro design language are melded into the tough bold lines of the R family. The volume knob, being the element you most often come in contact with, is a diamond-cut, artisan-grade masterpiece. Functionality is not sacrificed, the touchscreen supports touch controls and double-tap-to-wake

Intuitively audiophile

All-new user interface tailored to the RS2. The simplified menu structure is more intuitive and user-friendly than ever. Green & gold theme--firmly luxurious.

Evolutionary audiophile

The Darwin audio architecture is our in-house developed all-new hi-res audio processing architecture; improving greatly upon traditional R2R technology, it incorporates a host of studio-grade functionality such as linearity compensation for the R2R network, adjustable FIR filter, harmonic controller, NOS/OS switch, etc. in a highly portable device. The flexible architecture is fully adjustable in-house, yielding infinite possibilities for the evolution of this model and the next.

An output stage designed completely around R2R

Fully musical, realistic, natural and analogue, highly energetic when called for, and fully immersive for the listener.

NOS / OS mode switch

NOS mode is non-oversampling, yielding raw response to signal changes; OS mode is adapted to the various additional functionalities of the Darwin architecture, realizing personalized adjustments to the sound qualities to adapt to different earphones and different tastes.

256-tap adjustable FIR filter

The Darwin architecture is capable of up to 16x oversampling, with a variety of AA filters suited to various design goals, e.g. phase linearity, and high fidelity; also adaptable to the characteristics of different earphones, guaranteeing the suitability of the RS2 to all sorts of earphones.

Precision dual crystal oscillators, FPGA clock regeneration system

Dual precision crystal oscillators at 45.185MHz / 49.152MHz effectively reduce phase noise and jitter to -140dBc/Hz@1kHz offset.

Luxurious output stage circuitry

Utilizing current mode amplification, the output stage amplifies current via an OPA1652 and an LPF consisting of 2x OPA1612, offering high and clean input voltage and current to the output stage for exemplary transient and dynamic response. In conjunction with 2x flagship class OPA1622 amplifier chips, 4 independent channels of current mode headphone amplification, and the professional digital volume controller NJW1195A, the circuit guarantees maximal fidelity of the output to the input and maximal control over the headphone drivers.

MQA 8x unfolding

MQA 8x unfolding offers a reproduction of the original performance on par with the master tapes, transporting you to the same room with the artists!

MQA (Master Quality Authenticated) is an award-winning audio technology that enables music fans to stream the original master recording into their home in the highest possible quality. The MQA file is fully authenticated, backward compatible, and small enough to stream, so you can play MQA on any compatible device. Wherever there is audio, MQA delivers the best sound.

Format support

Supporting all the main music encoding formats, supporting PCM up to 384kHz / DSD hardware decoded at up to DSD256.

USB DAC / coaxial digital / Line Out all supported

Inheriting the high configurability of other HiByOS devices, the RS2 may be used as a USB DAC (e.g. playing computer/smartphone audio) but also output to other USB DACs (e.g. outputting audio from the RS2 to other USB DACs), and even output its audio as coaxial digital / line out signals.

Dual card storage

With slots for *2* micro SD cards, supports storage of up to 4TB and simultaneous usage of the two cards.

Long playtime

Up to 10 hours of continuous playtime. Stand by for up to 40 days.

Uncharging mode--Independent battery operation as USB DAC

Press the button to toggle charging in USB DAC mode--uncharging mode reduces battery consumption on the smartphone and isolates the device from external power supply noise.

What’s in the box

Package box, Type C to RCA digital coaxial cable, USB Type C cable, Darwin brooch, RS2, RS2 green leather case

Audio specifications

HiBy RS2 audio specifications (as tested within the 20Hz-20kHz range)

Output port 3.5mm PO @32Ω 4.4mm PO @32Ω 3.5mm LO @10K 
Frequency response +/-1dB 20Hz-20kHz 20Hz-20kHz 20Hz-20kHz
Output voltage 2Vrms 3.2Vrms 2Vrms
Maximum output power 125mW 320mW /
Rated output power (THD <1%) 125mW 225mW /
Crosstalk rejection 63dB 82dB 82dB
SNR 118dB 117dB 116dB
Dynamic Range 82 82 /
THD+Noise 0.006% 0.006% 0.006%
Output impedance 0.47Ω 0.94Ω 10K

Model: HiBy RS2
Operating system: HiByOS PureAudio version
CPU X1000E
DAC: Darwin Architecture
Audio format support: PCM384 / DSD256
USB: USB 2.0
Display size: 2.45”
Touchscreen: Yes
Resolution: 480*360
Storage - card slot 1: Micro SD card up to 2TB
Storage - card slot 2: Micro SD card up to 2TB
Chassis material: Aluminium alloy
Dimensions: 90.3 *64.8*18.8 mm
Weight: Approx. 158g
Charging: 5V⎓1.5A
Battery size: 3500mAh
Charging time: Approx. 3h (0%-100%)
Warranty Period: 1 Year

Warranty Period: 1 Year from the date of Invoice
Covered: Manufacturing Defects Only
Warranty Form: https://www.theaudiostore.in/pages/warranty-claim-form

HiBy Music, founded in 2011, is a leading company that specializes in developing and selling high-quality portable audio products. With a focus on digital audio players (DAP) and portable DAC & amplifiers, HiBy Music is dedicated to providing its customers with exceptional audio experiences. Whether you're an audiophile or a music enthusiast, HiBy Music has a range of products that cater to your specific needs. So why settle for anything less when you can enjoy music in its purest form with HiBy Music?

Customer Reviews

Based on 4 reviews
Biswa (Hyderabad)
Great Little Player

This little player really packs a powerful sonic punch. Highly musical and lasts long. Interface is fast. The output power is little low but it is a non issue for me. If you are looking for an enjoyable no nonsense music player with long battery life, this is the one to go for. It supports 2 sd card slots each of upto 2TB capacity. So no need for Wi-Fi if you have all your music with you. In order to avoid indexing limits, although I have not faced any, you can arrange your music in different folders and play. A huge shout out to theaudiostore and Pritam Ji for the fastest delivery.

Thanks for the great review! We're glad you're enjoying the HiBy RS2 R2R Portable Music Player. We think its great that it packs a powerful sonic punch and is very musical. The output power is a bit low for some users, but overall we're happy you're enjoying it. Thanks for the great feedback!

Visty Banaji (Mumbai)
A high capacity marvel

I bought this DAP to carry all my FLACs with me and it serves its purpose very well. However, the device does not have an indexing capability to catalogue so many tracks.
The sound is good when low-impedance headphones are driven from the balanced output.
The intruction manual is inadequate for using all the setting features which is particularly missed in choosing / setting the Darwin presets.
The build is excellent though the inteface is fiddly and the usable screen is tiny.
The first piece I got was defective but the AUDIO STORE provided excellent support. Pritam is an extremely knowledgeable and trustworthy person.

Thank you for your feedback. We're glad to hear that the HiBy RS2 R2R Portable Music Player has met your needs and serves as a high-capacity marvel for transporting your music.

Ashutosh Kaithwar (Delhi)

I have almost all sub 60k DAPs this is by far the best sounding DAP, pure audiophile grade, R2R dac is great if you know how to play around with Darwin options , mseb options doesn't work with MQA files , compact & lively music player

Thanks for the review! We're really glad you like the HiBy RS2 R2R Portable Music Player!

S. (Kochi)
Good value DAP

Hiby RS2 help you to experience typical R2R signature in a mid-fi price bracket. This is a unique DAP, and gives good value, as it can be used as a DAC/AMP, in DAC mode, by connecting from mobile or laptop with appropriate usb cable. It also is a stand-alone DAP for offline music files (from its dual SD card). Tonally, it provides good depth, especially to the vocals, and proves to be a good match for single DD iems. For other iem categories, the synergy may not always be perfect due to the unique R2R tonality, so need to be tried out. tonality. The included USAB cable is of great quality and is a good match to RS2. Other USB cables seem to create subtle changes which were not positive. For the asking price it’s a recommended buy if you want an R2R dac. As always a BIG thanks to Pritam from TAS, for facilitating a seamless buying experience and providing extended support.

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