Used / Open-Box FiiO WARMER R2R Desktop R2R Tube DAC

Reference price $269.00

Reference price is for price anchoring only. Final quote depends on condition, accessories, version, stock, and destination.

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Unit details confirmed before offer
Lab-inspected before dispatch
DOA support and repair path available

Product overview

The FiiO WARMER R2R is a Desktop R2R Tube DAC for digital-to-analog conversion in a desktop or two-channel system. HiFiLoop uses this page as a focused model page for used / open-box private-quote requests.

Key features

Desktop R2R tube buffer and DAC for USB, coaxial, and optical source systems.
FIIO proprietary fully differential 24-bit R2R DAC architecture supports NOS and OS operation.
Tube output stage uses four E88CC tubes with OPA1642AIDR amplification support.
Mechanical VU meter and input selection controls suit desktop and rack-style setups.
RCA single-ended and XLR3 balanced line outputs support integration with amplifiers or active speakers.
Driver-free USB mode and USB firmware upgrade support practical long-term use.

Key specifications

Product type	Desktop R2R tube DAC
DAC architecture	FIIO proprietary R2R DAC
Control / USB	GD32F303RET6 master control; SA9312L USB decoding
Amplifier / tubes	OPA1642AIDR x2 plus E88CC x4
Working modes	USB DAC, coaxial decoding, optical decoding
Supported formats	USB up to 384kHz / 32-bit; coaxial up to 192kHz / 24-bit; optical up to 96kHz / 24-bit
Outputs	RCA line output and XLR3 balanced line output
Display	Mechanical VU meter
Dimensions / weight	About 223.5 x 213 x 66.8 mm including feet; about 2865 g
Power supply	AC 100-120V or AC 220-240V regional power versions

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What this listing means

This is a used / open-box reference page for this model. The exact unit, included kit, timing, and support terms are confirmed before payment.

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Inspection & condition

Function, cosmetics, accessories, and known limitations are reviewed for the exact unit before dispatch.

Shipping & support

Processing is normally 3-5 business days after confirmation. International delivery is commonly 7-15 days; DOA and repair support are confirmed by destination.

What does Reference price mean?

It is a price anchor for comparison. It is not the final quote.

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