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Backert Labs Rhumba Extreme 1.4
The Rhumba Extreme 1.4 is our best value in a linestage tube preamplifier. Fully balanced connections, with sonics very near to our flagship Rhythm, for $8,500.
Changes in the 1.4 vs. the 1.3 model:- The 1.4 has improved circuits in the power supply and gain stage
- Better stock tubes: now using American-made tubes from the early 1960s (still 12au7’s or equivalents)
- Higher-quality capacitors used in the regulator and filament sections of the power supply
- An all-brass bottom panel that provides more holographic and natural sound quality (and is heavier)
- Now with 2 fully balanced XLR inputs and 2 fully balanced XLR outputs (still has 3 RCA inputs and 2 RCA output pairs)
- new “Gaia” feet from IsoAcoustics, the feet found on our flagship Rhythm preamp
- an entirely new circuit board, with a design that improves grounding and channel separation
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Professional Reviews 92/100
Deliciously Crispy
Sound Quality
95/100
Build Quality
88/100
Features Connectivity
92/100
Value for Money
88/100
With holographic imaging and a strikingly neutral, transparent voice, the Backert Labs Rhumba Extreme 1.4 makes recordings feel vividly present and finely layered. Rick Becker and Graig Neville both praised its dynamic drive, deep soundstage, and easy tube rolling, while its generous connectivity adds real-world versatility for ambitious systems.
What Reviewers Are Saying
Pros
Delivers highly transparent, neutral sound with vivid inner detail and strong harmonic realism.
Creates a deep, holographic soundstage with focused, tangible imaging and a strong sense of musical presence.
Shows fast, energetic dynamics and convincing micro-dynamic finesse, with tight, authoritative bass.
Offers flexible connectivity and easy tube rolling, making it adaptable to complex high-end systems.
&
Cons
The front-panel labeling can be faint in low light on the silver finish.
It has no headphone output, despite its very low output impedance and otherwise generous feature set.
SOUND QUALITY PERFORMANCE 95/100
Reviewers repeatedly describe the Rhumba Extreme as transparent, resolving, and highly revealing, with a clean window onto the recording and very strong inner detail. Across the two reviews it is also praised for neutral tonal balance, vivid spatiality, and a presentation that feels more emotionally involving and lifelike than before.
Transparency Resolution
96/100
The preamp is called transparent, with seamless resolution from top to bottom and a clear gain in inner detail. One review says it revealed lyrics and musical information with unusual clarity, while the other emphasizes a highly revealing yet not aggressive presentation.
Tonal Balance Musicality
94/100
Reviewers hear it as harmonically accurate and quite neutral, without sounding overly tubey or bloated. At the same time, it is also praised for liquidity, palpability, graceful harmonic decay, and a strong emotional connection to music.
Dynamics
93/100
Both reviews point to strong dynamic behavior, from very good dynamics and improved attack to fast, energetic transients. The music is described as more powerful and vigorous, with micro-dynamic finesse standing out as a major strength.
Soundstage Imaging
97/100
Imaging and space get especially enthusiastic praise: reviewers describe a more holographic soundstage, greater three-dimensionality, a deep multi-level image, and more focused, tangible placement of instruments. The repeated sense of greater presence and "being there" makes this one of the preamp's standout qualities.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
88/100
The reviews describe the unit as well-thought-out and well designed, with excellent build quality and a solid brushed-aluminum faceplate. They suggest careful execution and reliable tube-friendly engineering, though there is not a lot of deep commentary on internal construction beyond those positive impressions.
Features Connectivity
92/100
Connectivity is a major strength here, with multiple RCA inputs, fully balanced XLR and RCA outputs, tape-outs, and home-theater bypass mentioned in the reviews. The dual balanced XLR outputs, extra RCA outputs, and low output impedance make it particularly flexible for bi-amping, subwoofers, and difficult loads.
Value for Money
88/100
At a very high asking price, the value case rests on performance and flexibility rather than affordability, but the reviewers are notably positive about what it delivers. One calls it the low end of the high end and a formidable opponent to far more expensive preamps, while another says it elevates moderately priced gear into a much higher class.
Reviews
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Verified Dealers
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Authorized dealers for Backert Labs Rhumba Extreme 1.4
- Atelier 13 Audio — in-store — Forest Hills, Tennessee, United States (website)
- David Lewis Audio — in-store — Philadelphia, Pennsylvania, United States (website)
- Delve Audio — in-store — Caldwell, New Jersey, United States (website)
- Dr Vinyl — in-store — Middle River, Maryland, United States (website)
- Heartbeats + Headshells — in-store — Santa Fe, New Mexico, United States (website)
- Now Listen Here — in-store — Yonkers, New York, United States (website)
- The Cable Company — online and in-store — New Hope, Pennsylvania, United States (website)