FiiO Warmer R2R Tube Buffer and DAC Amp
- Output Power: 46 watts
- Number Of Channels: 4
- Warranty Description: 1 year
- Maximum Supply Voltage: 28 volts
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An R2R amplifier from FiiO rated at 46 watts, suited to buyers who already know FiiO's audio lineup rather than shoppers comparing broad specs.
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ASIN: B0G2BF66PWModel: WARMER R2RCategory: Audio Amplifiers
Overview
The FiiO WARMER is an R2R-design amplifier rated at 46 watts. R2R refers to a resistor-ladder circuit, a construction method some audio brands favor as an alternative to delta-sigma processing.
Specs here are limited to power output and the R2R label, so whether this unit is meant for headphones, speakers, or as a standalone DAC/amp combo is not confirmed in this data. FiiO is widely recognized for portable and desktop audio gear, which is worth keeping in mind when judging what this unit is likely built for.
- 46 watt power rating
- R2R ladder circuit design
- FiiO brand audio technology
- Listed under TV & Home Theater amplifiers
Who it's for
A pick for audio enthusiasts already familiar with FiiO's product line and R2R amplifier design who are shopping on that basis. Not the right choice for someone who needs a full spec sheet, including inputs and outputs, before deciding.
Pros and cons
- R2R ladder design, an alternative to standard delta-sigma circuits
- 46 watt power rating from an established audio brand
- No input or output specs listed
- Unclear from data whether headphone or speaker focused
Performance notes
R2R ladder designs process audio signal differently than the delta-sigma DACs used in most consumer electronics, and some listeners prefer the resulting sound, though this is a matter of preference rather than a measurable spec. At 46 watts, the WARMER falls into desktop amplifier territory rather than a high-power home theater amp.
Specifications
| Brand | FiiO |
|---|---|
| Model | WARMER R2R |
| Output Power | 46 watts |
| Number Of Channels | 4 |
| Warranty Description | 1 year |
| Maximum Supply Voltage | 28 volts |
| Included Components | AC Power cable*1, Quick Start Guide, Spare Fuse tube*1, USB Cable, Warranty card*1 |
Closest rivals on specs
Facmogu ST-838 2.1 Channel Subwoofer Amplifier- Maximum Supply Voltage 28 vs 12 volts (+133%)
- Output Power 46 vs 80 watts (-42%)
Pyle PFA300 Home HiFi Stereo Amplifier 90W- Maximum Supply Voltage 28 vs 14.4 volts (+94%)
- Output Power 46 vs 90 watts (-49%)
HiLetgo PAM8403 Mini Amplifier Board 5 Pack- Maximum Supply Voltage 28 vs 5.5 volts (+409%)
- Output Power 46 vs 6 watts (+667%)
Frequently asked questions
What does R2R mean on the FiiO WARMER?
It refers to a resistor-ladder circuit design used as an alternative to standard delta-sigma audio processing.
How much power does the WARMER put out?
It is rated at 46 watts.