{"id":445817,"date":"2026-06-11T14:23:50","date_gmt":"2026-06-11T12:23:50","guid":{"rendered":"https:\/\/freakuence.nl\/product\/kora-tb140-2\/"},"modified":"2026-06-11T14:51:39","modified_gmt":"2026-06-11T12:51:39","slug":"kora-tb140-2","status":"publish","type":"product","link":"https:\/\/freakuence.nl\/en\/product\/kora-tb140-2\/","title":{"rendered":"Kora TB140"},"content":{"rendered":"
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Description Freakuence!<\/strong><\/span><\/div>\n
The Kora TB140 immediately stands out for its quirky design. A square tube amp. Here it is not hunted for trends, but for character. <\/span><\/div>\n
Retail price: 5650.00<\/span><\/div>\n
General description<\/strong><\/span><\/div>\n
This integrated amplifier system uses the Square Tube\u00ae circuit, which employs four triodes per channel. This innovative configuration provides complete signal amplification. The output voltage of the Square Tube\u00ae circuit is applied directly to the speaker terminals. Audio power transistors, which are exceptionally linear, provide only impedance matching and deliver the necessary current to the speakers without further amplifying the signal. This approach eliminates problems common to traditional output transformers, such as phase shifts in both low and high frequencies, poor low-frequency behavior and current limitations. The chassis is made entirely of aluminum and steel and finished in mineral gray. The front panel features an acrylic panel over three-quarters of the top section, with a recessed rotary knob on the right side for menu navigation. The system features four line inputs and one phono MM input, with an input impedance of 47 k\u03a9 for the phono input and 15 k\u03a9 for the line inputs. Output power is 2 x 70 W at 8 \u03a9 and 2 x 100 W at 4 \u03a9. The bandwidth runs from 20 Hz to 20 kHz with a \u00b11 dB deviation. The system weighs 9.5 kg and has dimensions of 118 x 420 x 370 mm. <\/span><\/div>\n
Specifications Kora TB140<\/strong><\/span><\/div>\n
Power: 2 x 70 W at 8 \u03a9; 2 x 100 W at 4 \u03a9 Inputs: 4 analog RCA inputs 1 MM phono input Outputs: 1 pre-out 1 pair of loudspeaker outputs Dimensions (W x H x D): 420 x 100 x 340 mm Weight: 9.5 kg Power supply: IEC connector, 230 V AC (+7% \/ -10%) Maximum power consumption: 310 VA (2 x 100 W \/ 4 \u03a9); 210 W (2 x 70 W \/ 8 \u03a9) Internal power supply: 2 x (\u00b144 V DC), dual power supply Transformer: 300 VA toroidal transformer High voltage: +280 V stabilized, -180 V stabilized Tubes: 4 triodes per channel Enclosure: Aluminum and steel Color: Mineral gray<\/span><\/div>\n
Background information<\/strong><\/span><\/div>\n
The Kora TB140 was designed in Toulouse by engineer Bruno Ginouv\u00e8s, with a focus on natural sound and musical experience. The amplifier uses the hybrid “Square Tube” topology, a unique configuration with a tube preamp and a transistor output stage. High-quality cabling is used internally, with short signal paths for minimal distortion. The cabinet is sturdy and beautifully finished, largely with parts from Europe. <\/span><\/div>\n
Brand history<\/strong><\/span><\/div>\n
Kora was founded in 1990 in Portet-sur-Garonne, near Toulouse, France. Initially, the company produced power supplies and signal processing circuits for the aerospace industry. Later, Kora began offering amplifier kits and in 1994 introduced their first high-fidelity amplifier, the Design 30. In 2018, Kora reintroduced itself with the development of the patented “Square Tube” technology, a new approach to tube amplification. All Kora products are completely designed and hand-assembled in Toulouse. The company uses a network of highly qualified suppliers and subcontractors from the European aerospace industry. <\/span><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Description Freakuence! The Kora TB140 immediately stands out for its quirky design. A square tube amp. Here it is not hunted for trends, but for character. Retail price: 5650.00 General description This integrated amplifier system uses the Square Tube\u00ae circuit, which employs four triodes per channel. This innovative configuration provides complete signal amplification. The output […]<\/p>\n","protected":false},"featured_media":445794,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false},"product_brand":[],"product_cat":[984,1011,1010],"product_tag":[487],"class_list":{"0":"post-445817","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-amplifiers","7":"product_cat-class-a-a-b-stereo-amplifiers","8":"product_cat-stereo-amplifiers","9":"product_tag-used-en","10":"pa_kleur-zwart","12":"first","13":"instock","14":"sold-individually","15":"purchasable","16":"product-type-simple"},"acf":[],"yoast_head":"\nKora TB140 | Freakuence!<\/title>\n<meta name=\"description\" content=\"Kora TB140: hybrid tube amplifier with Square Tube\u00ae technology for natural, dynamic sound. \u2713 New & Used HiFi \u2713 Customer rating: 4.9 out of 5 \u2713 Trade-in \u2713 Listening session\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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