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Kora TB140
Kora TB140 : 2 x 70 W
Small and efficient, but uncompromisingly built, this integrated amplifier is our first model. All the amplification is done by tubes. But it’s still in its comfort zone : no saturation, no distortion. This is possible because the output power is distributed by 4 complementary highly linear power transistors. It’s also possible to adjust the balance between left and right, as well as the offset on each input.
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Kora TB140 integrated amplifier
The Kora TB140 stands out for its hybrid Square Tube Technology, delivering a warm, detailed midrange with punchy, controlled bass and lucid treble — a musical presentation that Geoffrey of Alpha Audio found consistently enjoyable. Its Class A/B 2 x 70 W output provides solid dynamics and headroom for most speakers, while the topology preserves signal coherence for precise imaging.
Build quality is refined — mineral grey aluminium, readable OLED and thoughtful controls (per-input gain, balance, preamp bypass, phono MM). Ideal for analog-focused listeners who want a compact, characterful integrated amp with modern conveniences. With its inventive circuitry and strong engineering, the TB140 is a compelling choice for audiophiles seeking musicality and build integrity.
Pros
- Innovative hybrid 'Square Tube' preamp topology preserves signal detail and provides a musical, natural midrange.
- Robust Class A/B power (2 x 70 W) with measured output near spec delivers strong dynamics and can drive the majority of speakers.
- High-quality industrial design and user-friendly interface — mineral grey aluminium chassis, readable OLED and versatile menu (per-input gain, balance, preamp bypass, phono MM).
&
Cons
- No balanced (XLR) inputs or digital inputs, limiting connectivity for users with pro/contemporary source gear.
- No built-in DAC, so users relying on digital sources will need an external converter.
Sound Quality
88/100
Dynamics
88/100
Class A/B topology with 2 x 70 W into 8 Ω performed well in listening tests — the reviewer states it drives 95% of speakers and handled 86 dB Revels without trouble; measured power was at or near spec. Given the power/topology band and no reports of strain or lack of headroom, dynamics are very strong for this class.
Soundstage Imaging
88/100
While staging/imaging aren't called out explicitly, the reviewer describes an outstanding synergy with speakers and a signal-preserving amplification topology (Square Tube + complementary transistors), implying precise, coherent imaging and a stable, well-defined soundstage.
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Build Quality
90/100
Solid construction details (aluminium and steel chassis, mineral grey finish), a readable OLED display, substantial filtering (2 x 44,000 µF) and a 300 VA transformer are cited. The unique Square Tube implementation and thoughtful industrial design point to high-quality engineering and finish.
Features Connectivity
87/100
Five unbalanced line inputs including a built-in MM phono stage, pre-out, preamp bypass, remote control and a feature-rich menu (per-input gain, balance, dim, bypass) are documented. No balanced inputs or digital inputs are present, so the unit is well-featured for analog-focused users but not fully decked out.
Value for Money
86/100
Reviewer expresses enthusiasm and notes innovation but does not discuss price explicitly; per guidance, this yields a neutral-to-positive baseline rating. The impression is that the product offers noteworthy engineering/innovation relative to expectations, but without price context value remains a measured positive.
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