The FiiO R7 R2R puts a complete desktop hi-fi system into one compact, upright unit: a streaming music player, a resistor-ladder DAC, a powerful balanced headphone amplifier, a digital transport, a preamplifier and a USB DAC for your computer. Sit it on a desk with a pair of headphones, or run its pre-outs into active speakers or a power amplifier, and it becomes the single source and control centre for the whole system. It is the R2R edition of FiiO's R7 all-in-one player, replacing the original R7's ES9068AS chip with FiiO's own discrete resistor-ladder converter. Available in black or white; this listing is for the black finish.
FiiO's own 24-bit R2R DAC
At the heart of the R7 R2R is a fully differential 24-bit R2R resistor network designed in-house by FiiO and built from 192 precision thin-film resistors across four channels. R2R conversion is prized for its natural, unforced presentation, and FiiO adds selectable FLAT and WARM sound profiles so you can lean the balance towards neutrality or a richer tone. Digital processing is handled by FiiO's DAPS (Digital Audio Purification System) with dual FPGAs and dual custom femtosecond clocks, which brings S/PDIF output jitter down to 72.5ps when the unit is used as a transport.
Headphone amplifier
The headphone stage uses a fully differential architecture built on TPA6120A amplifier chips, with five gain levels to suit anything from sensitive in-ear monitors to demanding full-size planars. In its Super Over-Ear mode it delivers up to 4000mW + 4000mW into a 32 Ohm balanced load. The front panel carries three headphone outputs: 4.4mm balanced, 4-pin XLR balanced and 6.35mm single-ended.
Android streaming platform
The R7 R2R runs a customised, open Android 13 system on a Qualcomm Snapdragon 680 processor with 8GB of RAM and 128GB of internal storage, so streaming apps and local playback run smoothly on the 5.5-inch portrait touchscreen. Dual-band 2.4GHz and 5GHz Wi-Fi and a Gigabit Ethernet port cover network playback, and Bluetooth with LDAC and aptX HD support handles wireless sources. A dedicated XMOS XU316 USB processor accepts PCM up to 32-bit/768kHz and native DSD512 from a computer.
Connectivity and operating modes
Rear-panel RCA and XLR outputs serve as line-out or pre-out, and coaxial and optical digital outputs let the R7 R2R feed an external DAC. Nine operating modes cover the different ways the unit can be used, and a front-panel dial switches the output between headphones, active speakers and a standalone amplifier. A global 10-band parametric EQ with Auto EQ matching, the FiiO Control app and a remote control round off the feature set.
Power
A built-in 30W switching power supply handles everyday use, while a 12 to 15V, 3A or greater DC input lets you add an external linear power supply later, so the unit runs from either AC or DC power.