Onkyo DX-C390 6-Disc Carousel CD Changer at Vinyl Sound Toronto Canada

The DX-C390 is a 6-disc carousel CD changer from Onkyo (Osaka, Japan), available at Vinyl Sound in Toronto, Canada. Designed for music lovers who want both audiophile-grade playback and the convenience of uninterrupted listening, it combines a high-precision multi-bit D/A converter with 128x oversampling and Onkyo's proprietary VLSC (Vector Linear Shaping Circuitry) and VQA (Vector Quantizer Audio) technologies for a cleaner, smoother analogue output. The exclusive Direct Digital Path replaces conventional PCB copper traces with a heavy-gauge shielded cable from the laser assembly to the rear panel outputs, protecting the digital bitstream from circuit noise. The DX-C390 holds six discs, allows changing five discs while the sixth is still playing, and supports Audio CD, CD-R, CD-RW, and MP3-format discs. RCA analogue, optical, and coaxial digital outputs connect to any hi-fi amplifier or external DAC, and the RI (Remote Interactive) jack enables integrated control with compatible Onkyo components.

VLSC, VQA, and Direct Digital Path

Three proprietary Onkyo technologies work together in the DX-C390 to preserve signal purity from disc to output. VLSC, or Vector Linear Shaping Circuitry, applies advanced shaping algorithms to the post-DAC analogue output to identify and suppress the pulse noise that digital-to-analogue conversion inherently generates, removing high-frequency grain from the signal before it reaches the output terminals. VQA, or Vector Quantizer Audio, is Onkyo's precision DAC technology that governs how the multi-bit converter reconstructs the analogue waveform from the disc's digital data, using a 128x oversampling digital filter running at 352.8 kHz to smooth the reconstructed signal and minimise quantisation error. Direct Digital Path is an engineering choice unique to the DX-C390 at its price level: rather than routing the digital bitstream from the laser assembly through the copper traces of the main circuit board, Onkyo uses a heavy-gauge, high-purity, heavily shielded cable to carry the signal directly from the disc mechanism to the rear panel outputs. This prevents the surrounding switching circuits from coupling electromagnetic interference into the delicate digital audio data before it reaches the DAC or the digital outputs.

Six-Disc Carousel and Continuous Playback

The DX-C390's carousel mechanism accepts up to six discs simultaneously, loaded via a motorised tray that rotates the carousel to access any disc without manual intervention. A key practical advantage is the ability to change five discs while the sixth remains active and playing, which eliminates the interruptions to music playback that are unavoidable with single-disc players. An illuminated light above the loading bay makes disc identification and swapping convenient in low-light listening environments. The ultra-quiet loading mechanism suppresses the mechanical noise of the carousel motor, preserving the listening environment during disc changes. Forty-track programming allows building a custom playlist from tracks across any of the loaded discs, and six repeat modes cover single track, single disc, all discs, and combination modes for flexible long-form listening. Random playback shuffles tracks across all loaded discs for a varied listening experience without manual interaction.

Connectivity and System Integration

The DX-C390's rear panel provides stereo RCA analogue outputs, one optical TOSLINK digital output, and one coaxial RCA digital output, covering both analogue and digital connection to any downstream component. The optical and coaxial outputs carry the raw PCM digital bitstream from the disc, allowing an external DAC in a connected amplifier or a dedicated outboard converter to perform its own digital-to-analogue conversion independently of the DX-C390's onboard VQA stage. An RI (Remote Interactive) jack enables control integration with compatible Onkyo amplifiers and receivers that support the RI protocol, allowing the amplifier to automatically switch to the CD input when the DX-C390 begins playback. The full-function RI remote provides access to all playback, programming, and repeat functions.

Key Features

• 6-Disc Carousel Mechanism: Ultra-quiet motorised carousel holding six discs; change five discs while the sixth plays for uninterrupted listening; illuminated loading bay for easy disc recognition in the dark.
• VLSC (Vector Linear Shaping Circuitry): Onkyo's proprietary post-DAC algorithm suppresses pulse noise from the digital-to-analogue conversion process for a smoother, cleaner analogue output.
• VQA (Vector Quantizer Audio): Precision DAC technology governing waveform reconstruction from digital data, working alongside the 128x oversampling digital filter.
• Multi-Bit D/A Converter with 128x Oversampling: 352.8 kHz oversampling digital filter minimises quantisation error and smooths the reconstructed analogue waveform for accurate signal reproduction.
• Direct Digital Path: Heavy-gauge, high-purity, shielded cable carries the digital bitstream from the laser assembly directly to the rear panel outputs, bypassing the main circuit board to eliminate electromagnetic interference pickup.
• Brushed Aluminium Front Panel: Sturdy chassis with a brushed aluminium fascia for a high-end appearance and structural rigidity.
• 40-Track Programming with 6 Repeat Modes: Program up to 40 tracks from across all six loaded discs; six repeat modes including single track, single disc, and all discs.
• Multi-Format Disc Support: Plays Audio CD, CD-R, CD-RW, and MP3 files on CD-R/CD-RW discs.
• Optical and Coaxial Digital Outputs: Both digital output types provided for connection to an external DAC or digital amplifier input; carries 16-bit/44.1 kHz PCM from the transport.
• RI (Remote Interactive) Integration: RI jack enables automated input switching and coordinated control with compatible Onkyo receivers and amplifiers.

Technical Specifications

Connections at a Glance

• 1 x Stereo RCA analogue output (left and right)
• 1 x Optical digital output (TOSLINK)
• 1 x Coaxial digital output (RCA)
• 1 x RI (Remote Interactive) jack

Frequently Asked Questions

What is the Onkyo DX-C390?

The Onkyo DX-C390 is a 6-disc carousel CD changer featuring a multi-bit D/A converter with 128x oversampling, VLSC pulse noise reduction, VQA precision DAC technology, and a Direct Digital Path shielded cable from the laser assembly to the outputs. It holds six discs, allows changing five while one plays, programs up to 40 tracks across loaded discs, and provides RCA analogue, optical, and coaxial digital outputs with RI remote integration. It is available at Vinyl Sound in Toronto, Canada.

How does the Onkyo DX-C390 compare to a single-disc CD player like the Onkyo C-30?

The DX-C390 and C-30 serve different priorities within the CD player category. The DX-C390's six-disc carousel delivers uninterrupted listening for extended sessions, with the ability to swap five discs while one plays and 40-track programming across all loaded discs, making it the better choice for listeners who want convenience and long playback capability. The C-30 is a single-disc player from the Icon Series focused on maximum resolution from each disc, featuring a 24-bit/192 kHz DAC and the ±10 PPM high-precision clock of the newer Icon Series platform. Both share Onkyo's VLSC technology and brushed aluminium front panel construction. For listeners who value catalogue access and session continuity, the DX-C390 is the practical choice; for those focused on the absolute best playback from individual discs, the C-30 is the more refined single-disc solution.

What is Direct Digital Path and why does it matter?

In most CD players, the digital audio signal travels from the laser pickup assembly to the DAC and output circuitry through the copper traces etched into the main circuit board. These traces are physically close to power supply circuits, motor control circuits, and other switching components that generate electromagnetic interference. This interference can couple into the digital signal path and add noise to the bitstream before it reaches the DAC. Direct Digital Path replaces the PCB trace route with a dedicated heavy-gauge, high-purity, heavily shielded cable that runs the digital signal directly from the laser assembly to the rear panel outputs, isolating it from the surrounding circuit noise and preserving the integrity of the digital bitstream.

Can the DX-C390 be used as a CD transport with an external DAC?

Yes, the DX-C390 provides both optical TOSLINK and coaxial RCA digital outputs that carry 16-bit/44.1 kHz PCM from the transport directly to an external DAC. Connecting via the digital output bypasses the onboard multi-bit D/A converter and VQA analogue stage entirely, allowing the external converter to perform its own digital-to-analogue conversion. This is useful for listeners who have a high-quality outboard DAC or whose amplifier or preamplifier includes a high-specification internal DAC.

What playback formats does the DX-C390 support?

The DX-C390 plays standard Audio CDs, CD-Rs, and CD-RWs containing either standard audio recordings or MP3 music files burned to disc. This covers commercially pressed CDs as well as home-burned discs of ripped music files, making it broadly compatible with the varied disc collections that many listeners have accumulated. WMA format files on CD-R/CD-RW are not listed as supported on the DX-C390, distinguishing it from the C-30 in this respect.

Where can I buy the Onkyo DX-C390 in Toronto or Canada?

The Onkyo DX-C390 is available at Vinyl Sound, an authorised Onkyo dealer in Toronto, Canada. Vinyl Sound carries the full Onkyo CD player lineup including the DX-C390 and the Icon Series C-30, and can advise on integrating either model into a complete two-channel music system.