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TEAC AI-503 silver

This product is no longer available for sale!

Specifications and features

Bluetooth

Integrated Amplifier with Bluetooth Function and Dual Mono USB DAC

The AI-503 is an integrated amp and USB DAC that supports inputs up to 11.2 MHz DSD and 384 kHz/32-bit PCM. The DAC/preamp, which is the heart of the unit, follows the same design concept as our UD-503 and adopts a fully balanced dual mono circuit design. Separate VERITA AK4490 D/A converters - manufactured by Asahi Kasei Microdevices Corporation - are used for the left and right channels. In addition to a USB digital input (for Windows/Mac computers), an optical/coaxial digital input, and an RCA analog input, we have also enabled high-resolution wireless audio listening by including an LDAC-compatible Bluetooth receiver. Moreover, with a combined 3.5 mm digital/stereo optical mini-jack on the front panel, the device supports wired and wireless inputs from DAPs.

The power amplifier uses a Class D power amp (manufactured by ICE power) that ensures high resolution when playing delicate signals as well as high linearity at high volumes. This unit can power both compact bookshelf speakers (for desktop applications) and large floorstanding speakers. The preamp section uses a fully balanced TEAC-QVCS high-precision volume control circuit with a 4-circuit construction. By maintaining detail levels at all resolutions, the AI-503 creates a highly realistic sound stage with a high signal-to-noise ratio and excellent sense of space. By connecting an external power amplifier to the pre-equipped output jacks, you can enhance performance and create an even more powerful audio system. The headphone amp section uses a discrete TEAC-HCLD circuit, with a push-pull arrangement, allowing it to easily drive high-impedance headphones. The two-level high/low gain switch enables optimal volume adjustment for everything from low-impedance in-ear monitors to high-impedance (600 Ω) in-ear headphones. Additionally, the inclusion of a 3.5 mm headphone jack, which supports a separate 4-pole grounding connection, allows for excellent channel separation even when using a balanced-type headphone or earphone.

Documentation

User manual
French

Technical specifications

  • Dual 384 kHz/32-bit converter
  • IcePower Class D amplification
  • Qualcomm APT‑X HD Bluetooth
  • Maximum output
    • 60 W + 60 W (10% distortion, 1 kHz, 4 Ω)
    • 30 W + 30 W (10% distortion, 1 kHz, 8 Ω)
  • Rated output
    • 43 W + 43 W (1% distortion, 1 kHz, 4 Ω)
    • 22 W + 22 W (1% distortion, 1 kHz, 8 Ω)

Measurements

  • Accepted speaker impedance: 4–8 Ω
  • Total harmonic distortion: 0.005% or less (1 kHz, 8 Ω, 1 W)
  • Signal-to-noise ratio: 100 dB or more
  • Frequency response: 10 Hz – 100 kHz (+1/−3 dB)

General

  • Power consumption: 38 W
  • Standby power consumption: 0.5 W or less (in standby mode)
  • External dimensions: 290 × 81.2 × 264 mm
  • Weight: 3.7 kg

Included items

  • Power cord × 1
  • Remote control (RC-1328) × 1
  • Remote control batteries (AAA) × 2
  • Instruction manual (this document, including warranty) × 1

User reviews

Gérald

Very satisfied with my purchase,
The finish of this little jewel is magnificent, and the sound is just as impressive, despite its low power the punch is there. My 1994 Cabasse Bisquine speakers are sensitive enough, the sound is very precise, with a beautiful stereo image. I really feel like I'm stepping up in quality compared to my old NAD C325. Given the quality of the chosen converters and all the formats recognized by this digital integrated amp, I'm set for many years to come. I connected my CD player with an optical cable and my PC via USB to take advantage of the precision of the TEAC's converter. I'm listening to more and more of my music through an HD streaming service, so I'm completely won over by this very pretty TEAC. I can only highly recommend it.

Comment from June 28, 2021 — Experience from June 17, 2021

Automatically translated — Show original (French)
Très satisfait de mon achat,
La finition du petit bijou est magnifique, le son l'est tout autant, malgré sa faible puissance le punch est au rendez-vous. Mes Cabasse Bisquine de 1994 sont suffisamment sensible, le son est très précis, très belle image stéréo. J'ai vraiment l'impression de franchir un niveau qualitatif par rapport à mon ancien NAD C325. Vu la qualité des convertisseurs choisis et l'ensemble des formats reconnus par cet intégré numérique, je suis tranquille pour de longues années. J'ai relié mon lecteur CD en optique et mon PC en USB pour pouvoir profiter de la précision du convertisseur du petit TEAC. J'écoute de plus en plus ma musique via un service de streaming HD, me voilà donc conquis par ce très joli TEAC. Je ne peux que le conseiller vivement.
  • Eco-contribution included in the sale price.
  • Manufacturer reference: AI-503-A-S
  • GTIN / EAN: 4907034222742
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