Chord Electronics BerTTi
The BerTTi brings exceptional clarity, vice-like rhythmic grip and a remarkably spacious, orderly soundstage to a compact Class A/B chassis. hi-fi+ admired its neutral, revealing authority, while StereoNET United Kingdom found its clean, vivid delivery composed even through demanding mixes. Precision-led and superbly built, it is serious high-end amplification for space-conscious systems.
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Deliciously Crispy
Sound Quality
92/100
Build Quality
94/100
Value for Money
88/100
Pros
Exceptionally clean, highly resolving sound with revealing midrange detail, controlled transients and a large, precisely organised soundstage.
Powerful rhythmic control and authoritative, detailed bass remain composed across wide dynamic swings.
Premium compact construction, with aircraft-grade aluminium metalwork, balanced XLR and RCA inputs, and cool-running operation.
Cons
Its lean, slightly dry and matter-of-fact voicing may be less satisfying for listeners seeking tube-like warmth or lushness.
It gives up some outright scale and high-volume headroom to more powerful rivals, particularly with difficult loudspeakers.
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What Reviewers Are Saying
SOUND QUALITY PERFORMANCE 92/100
Reviewers find the BerTTi exceptionally clean, detailed and controlled, with a neutral-to-slightly-lean presentation that prioritises precision over added warmth. It combines strong low-frequency grip and dynamic composure with a large, well-organised soundstage, although one reviewer felt it gives up some sheer scale to a more powerful rival.
Transparency Resolution
94/100
hi-fi+ calls detail retrieval “flat-out fanatical,” praising the amplifier's ability to expose fine vocal technique, transients and harmonic information without losing context. StereoNET likewise hears an unerringly clean, highly detailed performance, with a crystal-clear midband and an open view into recordings.
Tonal Balance Musicality
90/100
hi-fi+ describes a supremely neutral, naturalistic balance, with seamless treble integration, expressive voices and an engagingly communicative midrange. StereoNET agrees that it is vivid and musical, but characterises it as lean, crisp and a touch dry or “well lit” rather than romantic or forgiving.
Dynamics
91/100
Despite its compact dimensions and moderate quoted output, hi-fi+ reports no apparent stress at high levels and praises the BerTTi's faithful tracking of both large and subtle dynamic changes. StereoNET hears vice-like rhythmic grip, tightly controlled bass and serious punch, while noting that a cheaper, more powerful Exposure amplifier offers greater sheer scale and impact.
Soundstage Imaging
92/100
hi-fi+ hears a large, organised and convincing soundstage that locks instruments securely in place while preserving the sense of a complete performance. StereoNET similarly describes a highly even, open window on the recording, reinforcing the amplifier's orderly and precise spatial presentation.
Assessments of Build Quality, Usability, and Overall Propositions.
Build Quality
94/100
The BerTTi is repeatedly praised for its superb construction, including precision-machined UK-made aircraft-grade aluminium metalwork and excellent fit and finish inside and out. Its fully balanced Class A/B MOSFET architecture, twin switched-mode supplies, quality speaker terminals, balanced and RCA inputs, trigger connection and cool-running fan-assisted design suggest unusually thorough engineering for such a compact chassis.
Value for Money
88/100
At £3,995 RRP, the BerTTi sits in a premium compact-power-amplifier segment, but hi-fi+ says its performance makes a sturdy case for the asking price. StereoNET regards it as excellent, though its comparison with the cheaper and more powerful Exposure 3510 indicates that buyers prioritising outright output and physical scale may find stronger value elsewhere.
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Specifications
- Output Power
- 55 W into 8 Ω
- Power consumption
- Full power – 240 W Standby – 1 W
- Frequency Range
- 5 Hz-100 kHz +/- 0.5 dB
- THD
- 0.008%
- Signal-to-Noise Ratio
- 87 dB (A-weighted)
- Input Impedance
- 100kΩ Unbalanced/Balanced
- Input sensitivity
- 0.78 V
- Gain
- 30dB
- Dimensions
- 59 mm (H) 235 mm (W) 256 mm (D)
- Weight
- 3.75kG
Manufacturer's Description — Chord Electronics
BerTTi is a fully balanced 75-watt stereo power amplifier benefitting from the latest ULTIMA dual-feed-forward topology. Extending the range of ULTIMA-technology Chord Electronics amplifiers, BerTTi makes full use of advanced error-correction technology which monitors and immediately corrects signals before the output stage for astonishing accuracy and unrivalled fidelity from a compact-chassis device.
BerTTi features both balanced and unbalanced inputs, high-quality gold-plated loudspeaker outputs, plus a 10 A IEC power inlet. Further features include two modified power supplies for increased performance, plus an additional auxiliary power rail for the front end, which provides extra voltage to drive the custom-made MOSFETs.
British-built, BerTTi brings the next-generation ULTIMA topology to the ground-breaking Table Top (TT) range. When combined with the resolving power of the award-winning Hugo TT 2 DAC/preamp, the duo offers new levels of sonic performance from a small system. The addition of the Hugo M Scaler upscaler, with the ability to upscale audio to 705.6 kHz, 16x CD’s native resolution, makes the three-box system truly class-leading.
Inputs:
1x stereo pair of balanced XLRs
1x stereo pair of gold-plated unbalanced RCA
Output:
1x pair of gold-plated speaker terminals
Key Features
Trickle down ULTIMA tech
Dual feed-forward error correction
Fully balanced system
HF Switch mode power supply
Proprietary MOSFET
Compact design
Solid Aluminium Chassis
Included Accessories
Bertti Quickstart guide
Safety instructions
10A Mains IEC cable
Verified Dealers
Online Dealers
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Authorized dealers for Chord Electronics BerTTi
- Absoulute Audio plus Video — in-store — Aiken, South Carolina, United States (website)
- In Living Stereo — in-store — New York City, New York, United States (website)
- The Music Room — online and in-store — Erie, Colorado, United States (website)
- 110Hz — online and in-store — Kielce, Województwo świętokrzyskie, Poland (website)
- Accent On Music — in-store — Mount Kisco, New York, United States (website)
- Acoustic Designs Inc. — in-store — Scottsdale, Arizona, United States (website)
- Acoustic Sounds — online and in-store — Salina, Kansas, United States (website)
- Acoustic Streams — in-store — Lower Drift, England, United Kingdom (website)
- Acoustica — online and in-store — Chester, England, United Kingdom (website)
- Ajasom — online and in-store — Amadora, Lisboa, Portugal (website)
and 202 more verified dealers