Butler Audio TDB-5150 Butler TDB-5150 Hybrid Valve Power Amp

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Butler TDB-5150 Hybrid Valve Power Amp

Butler Audio TDB-5150

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Última actualización 11.09.2025

Descripción Descripción original Inglés, Otras traducciones de idiomas son traducciones y pueden contener errores. Inglés Alemán Español Turco Very good and sounding great. Highly recommended.

Sold for 3K originally.

Butler have gotten rave reviews all over the web. Here's an excerpt of one review here on Audiocircle: "Musical, warm and dynamic and that sums it up, this is actually a 5 channel power amp, but its too good to be wated on AV, bi- amp your speakers.

Previous designs generally employed vacuum tubes in impedance-isolated preamp or pre-driver stages. BK Butler's Tube Driver BLUE technology places the triodes exactly where they should be: DC coupled through the output power devices to the speakers. Therefore, the tubes are positioned to naturally and actively respond to the dynamic speaker load. This also completely eliminates one of the most inefficient and non-musical components in a typical tube power amplifier: the Output Transformer. Without the phase shift and induction generation caused by hundreds of turns of wire and massive core iron to overcome, BK Butler's newly patented current multiplying DC coupled circuitry allows the 6SL7GT output driver tubes to directly operate into the constant ratio-reduced speaker load. This novel design allows the tubes to safely produce authentic power vacuum tube dynamic characteristics hundreds of times greater than their original design capabilities.

Comparable in concept to precision racecar active power steering, BK Butler allows the tubes to "power steer" the audio output signal directly into your speakers. The result: A superlative marriage of tube and solid-state technology without the limitations of either. Literally, you get the reliable, efficient power capability of solid-state with all the greatly extended dynamics, warmth and musicality of the highest quality vacuum tube design available today.

General features:

• ZERO negative feedback. No global degenerative

negative feedback loop

• Open Ended Audiophile Circuitry

• Musical, warm and dynamic

• Load Independent; Will drive any speaker

• Hand selected/matched 6SL7GT Twin Triode tubes

(One per channel)

• Fully regulated Tube Heaters with Delayed Soft Start

(10-15 second turn-on delay)

• Load Adaptive Vacuum Tube Driven output circuitry

• Modular power channels with a seperate massive, oversized heatsink for each channel

• Independent AC Secondaries and Rectifiers

with 20,000µF per channel filtering

• DC fault / Short Circuit Protection Circuitry

• Diagnostic LEDs: Red=Fault

• Custom-made Hard Gold Plated Eutetic Brass RCA connectors

• Custom-made Hard Gold Plated Eutetic Brass 5-way Binding Posts

• Frosted Platinum finish

• Tube Illumination: Internal BLUE LEDs

• Patented Design

• Concept & Design: BK Butler / USA

Specifications:

• Rated Power (all channels driven):

5 x 150 Watts RMS per channel @ 8 ohms

5 x 225 Watts RMS per channel @ 4 ohms

• Freq response: 20Hz to 20kHz (+/- 0.5dB)

Power Bandwidth: -3dB, 50kHz

• THD: <0.10% @ 8 Ohms, <0.15% @ 4 Ohms

• S/N Ratio: Better than 110dB (A-Wtd)

• Slew Rate: 15v/µsec

• Input Sensitivity: 1.5V for 150 Watts into 8 Ohms

• Input Impedance: 47k Ohms

• Idling Consumption: Approx. 120 Watts

(Approx. 1A @ 120VAC or 0.5A @ 230VAC)

• AC Consumption (Nominal power):

1200 Watts @ 8 Ohms - 10A (120VAC), 5A (230VAC)

1800 Watts @ 4 Ohms - 15A (120VAC), 8A (230VAC)

• Dimensions: 17"W x 16"D x 8.5"H w/feet (7"H w/o feet)

• Weight: 48 Lbs. (19.2Kgs.)

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Lugar de envío
Norfolk NR35 - United Kingdom

Países de envío
el mundo entero

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