Desktop streaming and system-wide EQ

The FiiO R7 R2R combines a network music player, DAC, headphone amplifier, digital transport, and USB sound card in one desktop component. Its fully differential complementary 24-bit R2R DAC handles conversion through precision resistor arrays, while Android 13 and a Snapdragon 680 processor let you run streaming apps directly on the device. Five headphone gain modes, fixed and variable line outputs, and analog and digital inputs accommodate headphone listening, powered speakers, and external amplifiers.

R2R conversion through precision resistor arrays

FiiO’s in-house R2R DAC uses four channels containing 192 precision thin-film resistors to convert digital audio into an analog signal. The resistors have 0.1% tolerance and low temperature drift, helping maintain consistent resistance values as operating temperatures change. The fully differential complementary architecture uses matched resistor arrays, with a presentation described as balanced and warm.

Streaming apps and local playback on Android 13

A customized, open Android 13 operating system supports streaming services and third-party applications directly on the R7 R2R. An octa-core Snapdragon 680 processor works with 8GB of RAM and 128GB of internal storage for app navigation and local music playback. Dual-band Wi-Fi and Gigabit Ethernet provide wireless and wired network connections.

The 5.5-inch (14cm) HD portrait touchscreen gives apps a familiar layout for browsing albums and controlling playback. Physical knobs provide hands-on adjustment, while the FIIO CONTROL app supports remote operation and screen mirroring.

Five gain modes for headphone matching

Five selectable gain modes let you adjust amplification to suit low-impedance IEMs and more demanding full-size headphones. The front panel includes 6.35mm, 4.4mm balanced, and 4-pin XLR balanced headphone outputs, accommodating several common cable terminations.

High-resolution USB decoding and clock management

A dedicated XMOS XU316 chip supports USB decoding up to 32-bit/768kHz PCM and DSD512. In USB DAC mode, a connected computer, tablet, or phone sends audio through the R7 R2R’s conversion and amplification stages. The same connection lets it serve as an external sound card for music and video playback.

FiiO’s DAPS audio purification system combines a high-capacity FPGA with two custom femtosecond crystal oscillators for digital audio processing and clock management. System-wide playback without sample-rate conversion preserves the source sampling rate, while ALL TO DSD provides an alternative processing option. Coaxial output jitter is specified as low as 71.5ps when using the R7 R2R as a transport for an external DAC.

System-wide parametric EQ

System-wide 10-band parametric EQ lets you adjust frequency response for your headphones and listening preferences across playback applications. AUTO EQ provides one-click matching to available tuning profiles, with manual band adjustments for more specific changes.

A fully differential analog signal path

The analog circuitry includes four OPA1656 FET-input Burr-Brown audio op-amps and two TI OPA1612 op-amps within a fully differential architecture. Four Rubycon audio-grade electrolytic capacitors, four Rubycon film capacitors, and twelve high-capacity capacitors support the analog circuitry and power-supply filtering.

Internal AC power and external DC input

A built-in 30W switching power supply uses a choke and high-voltage capacitors to help suppress mains interference. The audio circuitry operates from a ±12V internal power architecture, with separate supplies for the digital and analog sections. An external 12V/3A DC input accommodates compatible power supplies, including the FiiO PL50.

Connections for speakers and additional sources

Rear RCA and balanced XLR outputs connect to powered speakers or an external amplifier. Select fixed-level line output when controlling volume downstream, or variable-volume preamp output to adjust listening levels from the R7 R2R. Front headphone outputs can operate independently or alongside the variable rear outputs.

An RCA line input accommodates analog sources, while coaxial and optical inputs accept digital audio from additional equipment. Coaxial and optical outputs also let the R7 R2R serve as a digital transport.

Nine playback modes

The R7 R2R supports Android, Pure Music, AirPlay, USB DAC, Roon Ready, Bluetooth receiver, line input, coaxial decoding, and optical decoding modes. These modes let it move between standalone streaming, local playback, and use with external sources. Black and silver finishes are available.

Availability

The FiiO R7 R2R is available now on Apos.