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Description
FiiO Warmer R2R Desktop Tube Buffer and DACFiiO Warmer R2R is a desktop DAC and tube buffer that combines a discrete R2R resistor ladder digital to analog converter with JJ E88CC vacuum tubes for a rich, analog sound, featuring NOS OS modes, multiple digital inputs (USB, optical, coaxial), RCA XLR outputs, and large, backlit VU meters for a classic, musical listening experience. Get this amazing DAC now from the official dealer of FiiO in Bangladesh, Gears for Ears today with an official 1
FiiO Warmer R2R is a desktop DAC and tube buffer that combines a discrete R2R resistor ladder digital-to-analog converter with JJ E88CC vacuum tubes for a rich, analog sound, featuring NOS/OS modes, multiple digital inputs (USB, optical, coaxial), RCA/XLR outputs, and large, backlit VU meters for a classic, musical listening experience. Get this amazing DAC now from the official dealer of FiiO in Bangladesh, Gears for Ears today with an official 1 year warranty.
R2R desktop DAC with JJ tube buffer
The WARMER R2R leans into tone. It’s a desktop R2R DAC with a tube buffer that adds body, color, and a relaxed kind of fullness that digital sometimes forgets. The fully-differential 24-bit resistor-array DAC sets the baseline with steady, unforced detail. Four JJ Electronic E88CC tubes bring a soft glow to the mids. Dual mechanical VU meters add a warm pulse to the room. With multiple digital and analog inputs, it works just as easily on a desk as it does in a living room system. When you want music to feel easy and inviting, this is a good way to get there.
Extensive connectivity
USB, optical, and coaxial inputs let you move between sources quickly. RCA and XLR outputs cover powered speakers, integrated amplifiers, and headphone amplifiers. Both outputs can run at the same time, which is handy if you enjoy switching between speakers and headphones during the day.
Fully-differential 24-bit R2R DAC
FIIO’s four-way fully-differential R2R design uses 192 thin-film resistors with 0.1% accuracy and low drift. It delivers the grounded, weighted presentation R2R fans look for. Instruments sit where they should. Details feel natural rather than etched. It’s a DAC that trades flash for ease.
Tube warmth with JJ Electronic E88CC valves
The tube buffer uses four JJ Electronic E88CC tubes fed by a ±28V high-voltage supply. JJ tubes are steady performers with a long service life, and here they bring a rounded, organic character to the signal. Edges soften. Vocals pick up a little more texture. If you like your music with a touch of warmth, the tubes handle that work gracefully.
LED-lit mechanical VU meters
The dual VU meters add a subtle sense of motion to your desk. They’re true mechanical meters powered by a dedicated IC, not a digital animation, so they move with a tactile kind of honesty. The warm backlight settles into the background and sets the tone for late evening listening.
Low-noise linear power supply
A 46W toroidal transformer provides clean, stable power with low ripple and low magnetic leakage. That means less noise, better channel separation, and more consistent performance from both the DAC and tube stages. The measured results back it up—≥114dB SNR and a ≤7uV noise floor.
Vintage-leaning design with solid thermals
The chassis follows FIIO’s squared, minimal desktop aesthetic, paired with a grille-pattern top plate that vents heat efficiently. The tubes stay comfortable, the internals stay stable, and you can settle into long listening without worrying about thermals.
NOS and OS modes
Two decoding modes let you shape the character of the sound. NOS mode keeps the original sample rate intact for a relaxed, effortless presentation. OS mode upsamples to 384kHz for a slightly more defined edge. It’s an easy way to fine-tune the feel of the music.
UAC1.0 and UAC2.0 compatibility
A simple lever switches between UAC1.0 and UAC2.0, which keeps the WARMER R2R friendly with consoles, computers, and mobile devices. No drivers needed. Just plug in the source you want and start playing.
Product highlights
- Fully-differential 24-bit R2R resistor-array DAC
- Four JJ Electronic E88CC tubes in the buffer stage
- USB, optical, and coaxial digital inputs
- RCA and XLR line outputs with simultaneous output capability
- LED-backlit mechanical dual VU meters
- 46W low-noise toroidal linear power supply
- NOS and OS decoding modes
- UAC1.0/2.0 support for wide device compatibility
- Vintage-inspired chassis with effective heat dissipation
- Supports PCM up to 384kHz/32bit and DSD256
- Color options: black or silver
Specifications
- Color: Black or silver
- Dimensions: 8.8 x 8.4 x 2.6in (223.5 x 213 x 66.8mm, incl. feet)
- Weight: 6.3lbs (2.87kg)
- Display: Mechanical pointer VU meters
- DAC: Fully-differential true 24-bit R2R resistor array
- Tube stage: JJ Electronic E88CC x4
- Power supply: 46W toroidal audio linear transformer
- USB decoding: PCM 384kHz/32bit, DSD256
- Coaxial decoding: PCM 192kHz/24bit
- Optical decoding: PCM 96kHz/24bit
- RCA output: ≥1.8Vrms L+R (1kHz @ 10kΩ)
- XLR output: ≥3.8Vrms L+R (1kHz @ 10kΩ)
- Frequency response: 20Hz–45kHz, attenuation <2.4dB
- SNR: ≥114dB (A-weighted)
- Noise floor: ≤7uV (A-weighted)
- THD+N: ≤0.053% (1kHz / -7dB @ 10kΩ)
What's included
- WARMER R2R
- AC power cable
- USB cable
- Spare fuse tube
- Quick start guide
- Warranty card
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
If you were looking for a sign to buy this, here it is
Color: A) Small 2.5" Ball
If you are looking for a ball that can stand up next to a heavy, aggressive chewer.. this is a good choice. Our Pitbull literally destroyed any and every toy that she gets with the exception of one kind of kong ball. She tore through the kong Frisbees, any kind of squeaker toy, and the wobble wag giggle ball (she usually always ends up destroying these but it takes a few weeks. Today she beat her record and had her brand new ball destroyed within the first 30 minutes of us taking it out of the box). But, this ball she has not been able to destroy. I'd like to believe that the Kong ball she has and this ball are made of the same material. Because they are the only balls she can't ruin. And it's not because of a lack of trying. We have watched her sit there and chew with a side of her mouth for an hour or more, trying to make some kind of indention or tear in it and it just never happened. She loves to chew this thing, chase this thing, sleep with this thing. I most certainly recommend this ball. If it is I'ah proof then it is most certainly, 100% a durable ball and worth every penny
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 7, 2026
★★★★★ 5
Chew King Supreme Chew Toy
Color: B) Medium 3" Ball
So far, freaking amazing. This ball is awesome. I have a 90 lb American Bulldog. Like other reviews. Lot of " indestructible balls" lasted minimum time. Not this one. She even took it to bed with her
I bought the 3 inch ball, not the 4 inch ball. The 3 inch ball works amazingly for a large Dog. Yes the 4 inch would be better. So in my opinion, either ball would be fine.
As others also said. This ball keeps a active Dog busy for hours. Love to play catch. Love frozen peanut butter in it.
One last thing. The price is amazing. I don't see needing to buy another, unless it is lost, because this is made to last. We couldn't be happier.
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Reviewed in the United States on March 10, 2026
★★★★★ 5
Malinois proof
Color: B) Medium 3" Ball
So far this has held up great. My Malinois who has destroyed nearly every ball I’ve gotten her, this one has lasted over 3 weeks without a dent, compared to some that don’t even last a day lol. Although the medium size is a little too big for her liking she still plays with it. It’s very durable and I like the middle part for engagement as well. I would recommend if you have a dog who destroys every ball possible.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Actually Durable
Color: B) Medium 3" Ball
One of the few "heavy duty" toys that my pittie hasn't destroyed after a couple of weeks. Most of them last two days. She's an absolute beast so I'm confident if she can't destroy it, few dogs can.
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Reviewed in the United States on April 28, 2026
★★★★★ 1
Not for aggressive chewers!
Color: H) Infinity Ring, Color: H) Infinity Ring
Not for aggressive chewers! Done for in about two minutes. I unboxed this and tugged with my Mal for a but then let her have it. Within minutes she had chewed through it. Not worth the money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 10, 2026
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