Name: FATfreq x HBB Deuce | Dynamic Universal IEMs
Brand: FATfreq
SKU: FF-HBB-DEUCE-35
Price: 239.0 USD
Availability: InStock

FATfreq x HBB Deuce closeup left earphone with attached blood cable whitebox

FATfreq x HBB Deuce closeup left earphone with attached blood cable over black herringbone background

FATfreq x HBB Deuce closeup left earphone with attached blood cable Bokeh black background

FATfreq x HBB Deuce closeup high angle with attached coiled stock red blood cable on wood table

FATfreq x HBB Deuce closeup eye level with attached coiled stock red blood cable on smooth surface

FATfreq x HBB Deuce impedance adapter 4.4mm

$209.00

Termination

3.5mm

4.4mm

3.5mm - Open Box

4.4mm - Open Box

FATfreq x HBB Deuce, the Sub-Bass IEM with the Golden Combo of Punch and Rumble

Features FATfreq's 2nd generation Basscanon technology
Deep, focused power featuring 25dB sub-bass shelf
Meticulously tuned with top reviewer HBB (Bad Guy Good Audio Reviews)
Custom-designed Dynamic chamber
Check out our measurement of Deuce

single fatfreq x hbb deuce earphone with attached cable running across butcher block table

Bloom's Take

The FATfreq Deuce has arrived, the highly anticipated collaboration with HBB, also known as Bad Guy Good Audio Reviews. It sports a streamlined, professional look with glossy black housing and subtle branding, and with its sturdy yet flexible Silver 'Blood' cable, the Deuce combines premium aesthetics with a focus on comfort, durability, and incredible value for its price.

Sound wise, the IEM combines FatFreq’s signature bass power with HBB’s tuning sensibilities, delivering a deep, textured low end that satisfies bass lovers while keeping the mids and highs clear and balanced. The Deuce is an ideal choice for anyone looking for both warmth and clarity in a single IEM, and it's a standout among other popular IEM collaborations, particularly for those seeking high-quality bass with a nuanced sound profile.

Meticulously Tuned with Top Reviewer HBB

Over a year, the Deuce was meticulously tuned with top reviewer HBB, also known as Bad Guy Good Audio Reviews, undergoing multiple iterations of tuning and design. Each phase focused on refining sound clarity, depth, and dynamics. HBB's extensive collection of hip-hop, rock, and classical tracks heavily influenced the Deuce's tuning direction, with significant effort spent to ensure it excels in these genres. This dedication has resulted in an IEM that offers unparalleled audio quality and an immersive experience.

FF Custom-Designed Dynamic Chamber

FATfreq introduces a new acoustic system featuring advanced networks that meticulously manage sound wave propagation to ensure optimal clarity and precision. Specially engineered bass chambers optimize airflow, enhancing tonality and deepening bass response.

fatfreq x hbb deuce coiled blood cable highlighting 3.5mm plug

FATfreq Tech

BASS CANNON™ (Patent Pending): Using proprietary dynamic woofers, bass chambers and acoustic damping networks, FATfreq was able to design the deepest bass ever recorded of over 30dB, expertly controlled below 150Hz with zero mid-range bleed. A FATfreq innovation pioneered and perfected for sheer bass power.

SONAR LA TROMPA™: Inspired by the anatomy of the traditional french horn, FATfreq uses exponential horn curvature for gain control and to improve treble tonality via acoustics. Providing you with Smooth, natural sounding highs, grounded by a nice timbre in the mid and low frequencies.

PHASEALIGN: The absence of a DSP in IEMs means that FATfreq had to match the phase of multi-way systems via Acoustic delay. Using proprietary structures, they were able to align the low, mid and high frequencies such that they reach your eardrum in a coherent manner. Giving you the sound accuracy and resolution demanded on stage and studio.

fatfreq x hbb deuce earphones with attached red blood cable hanging over corner of amp dark

Specifications

Bass Cannon™ technology
Cable: 2-Pin (0.78) sockets
FATfrequency 1 Year Warranty

In The Box

FATfreq x HBB Deuce IEM
Silver 'Blood' cable + Bass impedance adapter

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Best audio product ive ever purchased. The sound is jaw droppingly incredible.

Really good IF you get memory foam ear tips

Very good IEMs IF you get memory foam ear tips that will fit it. I used Dekoni yet it took me a lot of effort to force them and only i carefully applied very little liquid soap to help with sliding them to the super wide nozzles i thing around 7mm wide. Out of the box with original silicon tips it sound like crap. No base. With memory foam it sounds really good! Although i use it with DAC iFi Go Kensei and that baby does the magic with xSpace option - that when FATfreq x HBB Deuce really opens up! Due to its tuning and massive 25dB sub base feels like mid base is on the low compared to sub base - with Kensei xSpace and K2HD option this EIMs sound sublime and truly enjoyable - and i am compared them to my Sennheiser IE900 that is 6 times higher in price.
The dongle adaptor that came with it is not necessary and kinda waste given its already massive sub base. I highly recommend manufacture instead concentrate on proper memory foam inserts - having them would significantly improve perception of this IEMs as i almost returned them back until i was able to figure out how to use third party foam inserts.
Carrying case is a joke - too small so perhaps u can get bigger one from third party - there are many good and cheep larger carrying cases.
Now more importantly - cable is solid but too microphonic - i will be buying another cable to replace original. Unless you change eartips it wont sound to its true potential. Cable replacement not necessary it is just nice to have - ear tips though MUST or it is compared to really good sport car with crappy low rated tires.

Fun

These took me back to when I got out of the Army and bought my first car. I had 2 Cerwin-Vega subwoofers in it and between the 87 Supra I bought in 92 and the quality sound system I had installed in it the car was a lot of fun. The Deuce IEM’s remind me of that car ! They really take me back there a lot of fun !

Good, but uncomfortable

Really nice, tactile bass. The nozzle is absolutely massive though. Hurts if I have them in for too long.

Fun bassy IEM!

Love the Fatfreq x DEUCE IEMs — they punch way above their size with clear, balanced sound and surprisingly strong bass. Comfortable for long listens and easy to rock whether I’m commuting or just chilling. Arguable on the value for how good they feel and sound, but I like them lol.

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FATfreq x HBB Deuce Dynamic Universal IEMs | Bloom Audio