DAC with a dual-mono configuration that supports resolutions up to 11.2MHz DSD and 384kHz/32bit PCMSeparate VERITA AK4490 D/A converters made by Asahi Kasei Microdevices Corporation used on left and right channelsBluetooth receiver that supports LDAC/Qualcomm aptXTM (as well as AAC and SBC)Filter type can be switched, choosing from 2 DSD digital filters, as well as 4 PCM filters and off modeTwo built-in high-precision dedicated clocks for 44.1kHz and 48kHz signals and their multiples (enabled during USB asynchronous transmission)TEAC-QVCS high-precision volume control circuit with fully-balanced structureHigh-output Class-D power amplifier (made by ICEpower a/s)Headphone amp with discrete, push-pull circuit and a maximum output of 280mW+280mW (TEAC-HCLD circuit)Ground connection supported by 3.5mm 4-pole stereo headphone jack (combined with regular 3.5mm stereo mini type)High-capacity toroidal-core power transformersPair of RCA analog input jacksVolume-controlled pair of RCA analog output (pre-out) jacksUSB/coaxial/optical digital inputs (one each on back panel)Combined round optical digital/3.5mm stereo mini jack (on front panel)Dual analog level meters with adjustable brightnessLow-energy consumption design and automatic power-saving functionAll-metal enclosure provides both vibration resistance and a stylish appearance in an A4-page-sized footprint that can fit on a deskDedicated remote control includedIEC inletCompliant with RoHSThe AI-503 is an integrated amp and USB DAC that supports inputs up to 11.2MHz DSD and 384kHz/32-bit PCM.
These DACs enable the reproduction of the finely etched detail and outstanding sense of stereo placement that are the hallmarks of quality high-definitio.
Along with native playback of 11.2MHz DSD signals through direct processing, a wide range of high-resolution audio sources (including 384kHz/32-bit PCM digital input) are supported.
Smart and High-Quality Hi-Fi System Specifications High-performance VERITA AK4490 DACs support 11.2MHz DSD and 384kHz/32-bit PCMFor the DAC chips, the key to high-performance digital audio, we used the highly-regarded VERITA AK4490* DACs, made by Asahi Kasei Microdevices Corporation.
Furthermore, the inclusion of a 3.5mm headphone jack, one that supports a 4-pole separate ground connection, allows excellent channel separation, even when using balanced-type headphones or earphones.
The two-stage High/Low gain switch enables optimal volume setting for everything from low-impedance in-ear monitors to high-impedance (600) on-ear headphones.
The headphone amp section uses a discrete TEAC-HCLD circuit, with a push-pull arrangement, allowing it to drive even high-impedance headphones with ease.
By connecting an external power amplifier to the fitted pre-out jacks, you can upgrade performance and create an even more capable audio system.
By maintaining detail levels at all resolutions, the AI-503 creates a very realistic soundstage, along with a high signal-to-noise ratio and excellent sense of space.
The pre-amp section uses a fully-balanced TEAC-QVCS high-precision volume control circuit with a 4-circuit construction.
This unit can power both compact bookshelf speakers (for desktop applications) and large floorstanding speakers.
Furthermore, with a combined 3.5mm optical digital/stereo mini jack on the front panel, the unit supports wired, as well as wireless, input from DAPs.
The power amplifier uses a Class-D power amplifier (made by ICEpower a/s) that guarantees high resolution during the playback of delicate signals as well as high linearity at high volumes.
In addition to a USB digital input (for Windows/Mac computers), optical/coaxial digital input and RCA analog input, we have also enabled high-resolution wireless audio listening by including a LDAC-compatible Bluetooth receiver.
Separate VERITA AK4490 D/A converters - made by Asahi Kasei Microdevices Corporation - are used for the left and right channels.
The DAC/preamp, which is the heart of the unit, follows the same design concept of our UD-503 and adopts a dual-mono circuit design that is fully balanced.
DAC with a dual-mono configuration that supports resolutions up to 11.2MHz DSD and 384kHz/32bit PCMSeparate VERITA AK4490 D/A converters made by Asahi Kasei Microdevices Corporation used on left and right channelsBluetooth receiver that supports LDAC/Qualcomm aptXTM (as well as AAC and SBC)Filter type can be switched, choosing from 2 DSD digital filters, as well as 4 PCM filters and off modeTwo built-in high-precision dedicated clocks for 44.1kHz and 48kHz signals and their multiples (enabled during USB asynchronous transmission)TEAC-QVCS high-precision volume control circuit with fully-balanced structureHigh-output Class-D power amplifier (made by ICEpower a/s)Headphone amp with discrete, push-pull circuit and a maximum output of 280mW+280mW (TEAC-HCLD circuit)Ground connection supported by 3.5mm 4-pole stereo headphone jack (combined with regular 3.5mm stereo mini type)High-capacity toroidal-core power transformersPair of RCA analog input jacksVolume-controlled pair of RCA analog output (pre-out) jacksUSB/coaxial/optical digital inputs (one each on back panel)Combined round optical digital/3.5mm stereo mini jack (on front panel)Dual analog level meters with adjustable brightnessLow-energy consumption design and automatic power-saving functionAll-metal enclosure provides both vibration resistance and a stylish appearance in an A4-page-sized footprint that can fit on a deskDedicated remote control includedIEC inletCompliant with RoHSThe AI-503 is an integrated amp and USB DAC that supports inputs up to 11.2MHz DSD and 384kHz/32-bit PCM
