Name: xDuoo TA-66 | OTL Tube Headphone Amplifier
Brand: xDuoo
SKU: XDU-TA66
Price: 186.15 USD
Availability: InStock

xDuoo TA-66 top front quarter over white background

xDuoo TA-66 top front half quarter over white background

xDuoo TA-66 front quarter over white background

xDuoo TA-66 bottom with removed cover showing internal wiring

$219.00 $186.15 Save 15%

Condition

New

Open Box

xDuoo TA-66 Offers Sweet Vintage Tube Technology, Great Sound, and Premium Build at a Crazy Price

Uses one 6N2 tube for preamp and one 6N5P for buffer
Perfect as a headphone amp or preamp for 2 channel
Uses point-to-point wiring vs. PCB for authentic sound
Custom xDuoo metal polyester film capacitors for tube output coupling
Incredible sound and build for the price

Eversolo TA-66 warm on wood table with connected Meze headphones on stand

Analog Tube Bliss

Introducing xDuoo's TA-66 high performance OTL Tube amp/preamp that brings a classical tube amp spirit to your rig. The TA-66 adopts a 6N2 tube for preamp function making vocals sweet and exquisite, and a 6N5P buffer tube creating soft, charming audio. It also features a step-by-step potentiometer which eliminates low volume imbalance problems and yields precise control. It trades in the PCB for vintage point-to-point wiring for a more authentic sound. And with its sandblasted texture panel and solid aluminum alloy chassis, the amp is resistant to external interference while looking and feeling ultra-premium.

Point-to-Point Wiring

xDuoo uses a retro-grade point-to-point soldering technique, employing copper wires for the tube circuit while also soldering resistors and capacitors directly to the tube pins. This reduces the drawback of excessive leads while the use of straight-line connections minimizes unneeded wiring distances for shortest possible signal path. The technique ensures overall cleanliness along with interference reduction and puts the entire circuit in an ideal state to obtain a sound quality that closely resembles the original characteristics of vacuum tubes. The result is smooth audio with a throwback to the golden age but with modern simplicity and aesthetics.

xDuoo TA-66 internal wiring closeup

Specifications

Power Source: AC 110 / 120 (manual toggle)
Output Power: 200MW (300Ω load)
Frequency Range: 10Hz-30kHz (±1DB)
Gain: +18dB
THD+N: 0.08% (1kHz@300Ω load)
SNR: 107dB
Earphone Impedance: 60-600Ω
Input: RCA
Output: 6.3mm headphone, RCA AUX out
Size: 11.4" x 6" x 7.2"
Weight: 11 lb
xDuoo 1 year Warranty

In the Box

6.3mm to 3.5mm converter
Power cable
xDuoo TA-66 User Manual
Brand card

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The XDuoo TA66 is marvelous.

I already have two headphone amps: the Apos Gremlin hybrid tube amp and the IFI Zen Can Amp. I also have about 20 pair of headphones. I like mixing and matching headphones and amplifiers. Unfortunately, several of the high impedance headphones I purchased, thinking they would sound better on the tube amp I had really were kind of meh. I therefore thought I would try a OTL tube amp. After a lot of research, it looked like the XDuoo TA66 headphone amps would be the best choice for me. Bloom was very helpful with a bunch of pre-purchase questions I had and also had the best price, I bought TA66 from them. Since all my audio sources are digital, and because the TA66 can act as a tube buffer, I placed the TA66 between the unbalanced RCA out of my DAC and one of the analog inputs on my Rotel preamp. The TA66 was very easy to place in the source path and I only needed an extra pair of good RCA cables to complete the audio path. I placed the well packed tubes into their sockets and plugged in the AC. I plugged in a pair of Sennheiser HD 560s (150 ohm) headphones and immediately noticed improvement in the sound stage and the overall tember of the headphones. It wasn’t subtle. The HD 560s sounded a whole class above what I paid for them. I can say that was fairly consistent among all the higher impedance headphones I have: Sennheiser HD 58x, FIIO FT3 (350 ohm), AKG 701 & 7xx (62 ohms) and Beyerdynamic DT880 (600 ohms). The single most improved headphone was the FIIO FT3 which acted as if it’s guts had been pulled out and replaced with something far , far more expensive. I cannot believe how detailed yet listenable this change made to these headphones. I listen to 70s, 80s, 90s rock music, classical, jazz, big band, instrumental vocals, whatever - the TA66 has made everything sound better in a way that completely transcends the cost of this headphone amplifier on higher impedance headphones. I am reviewing highlights from my CD library, and I am enthralled by the results. Likewise, streaming music from ROON/Qobuz and Apple Music were improved - although not as much as my CD sources. I can recommend this product with only one reservation, they really should’ve put the power switch on the front. Fortunately, that is only an inconvenience and not a barrier. Five stars.

First purchase from Bloom Audio! Great transaction and fast shipping.
As far as product, its a great amp for my budget! I already rolled the tubes and I am very pleased. Thanks Bloom.

They pay attention to every detail.

They pay attention to every detail. I had requested that the product be delivered on Saturday if possible, and it was delivered on Saturday. Excellent service.

Excellent amp

Outstanding little unit!

I have been having a bunch of fun swapping out the tubes on this amplifier to see what it does to the sound. It seems to be both a really good preamp and headphone amplifier, driving my pair of Sennheiser HD 490 pretty easily with plenty of headroom.