Accuphase DP-450 MDS CD Player
Accuphase DP-450 MDS Compact Disc Player A four-DAC, vibration-engineered CD player built on the conviction that disc playback still belongs at the center of a serious system. Four DACs Working as One The heart of the DP-450 is Accuphase's 4MDS+ conversion system, and understanding it is the key to understanding why this player sounds the way it does. Inside sits a single ESS ES9026PRO digital to analog converter chip, but Accuphase does not use it the conventional way. Instead of letting one conversion path do all the work, the DP-450 splits the signal across four parallel DAC circuits per channel, then sums the results back together before they leave the chip. Because random noise in each path is independent, combining four paths this way reduces overall noise and distortion by roughly the square root of four, which in practice means noticeably lower noise floor and better linearity than a single converter could achieve on its own, especially at very low signal levels where conventional delta sigma converters tend to struggle. That output then passes through Accuphase's Direct Balanced Filter circuitry, which gives the balanced XLR output and the unbalanced RCA output their own independent filter paths rather than sharing one and splitting it. The result is that neither output loads down or interferes with the other, so whichever connection you use arrives at your amplifier in its full, uncompromised form. The whole digital section runs fully balanced from the conversion stage forward, which is part of why Accuphase players have a reputation for sounding quiet and composed even on dense orchestral or electronic material. A Chassis Built to Ignore Vibration A CD player's biggest enemy is not the disc, it is vibration, because any vibration that reaches the laser pickup as it reads a spinning disc translates directly into timing errors and lost detail. Accuphase rebuilt the DP-450's drive assembly from the ground up to fight this. The chassis structure supporting the drive mechanism was simplified from seven separate pieces in the prior generation down to two, and fewer joints mean fewer paths for vibration to travel and fewer opportunities for resonance to build. The traverse unit, which carries the laser pickup itself, floats on newly engineered viscoelastic dampers rather than sitting rigidly in the chassis, so external vibration is absorbed before it ever reaches the lens. A three layer bridge made with an open cell foam structure wraps around the spinning disc to contain operational noise at the source, and an eight pole neodymium chucking magnet clamps the disc evenly so it spins true rather than wobbling, which on its own measurably improves reading accuracy. The entire mechanism is also recessed into the bottom plate to keep the center of gravity as low as physically possible, and the unit sits on high carbon cast iron insulator feet that damp out vibration arriving from the rack or the floor beneath it. Accuphase's own engineering data shows this combination cuts vibration transmitted to the laser pickup roughly in half compared with the prior generation drive, which translates to meaningfully more accurate disc reading rather than just a marketing claim on a spec sheet. What the Numbers Actually Mean for Your Ears Specifications only matter if you know what they buy you, so here is what the DP-450's numbers translate to in a listening room. A signal to noise ratio of 119 dB means the player's own background noise sits roughly 119 dB below full output, which in real terms is an output noise voltage of only about 2.8 microvolts, quiet enough that the noise floor of the player itself essentially disappears beneath whatever is on the recording. A dynamic range of 116 dB describes how well the player can reproduce the gap between the quietest audible passage and the loudest peak on a disc without losing either end, which matters enormously on classical recordings with wide dynamic swings or on well mastered modern albums that were not compressed to death. Total harmonic distortion plus noise of just 0.0008 percent across the full 20 Hz to 20 kHz audible band means the player adds almost nothing of its own character to the signal, letting the actual recording come through rather than a colored version of it. Channel separation of 113 dB keeps the left and right channels from bleeding into one another, which is part of what gives a well recorded stereo image its precise, three dimensional placement of instruments and voices. None of these numbers exist in isolation. They work together to produce the quality audiophiles describe as a black background, where the music simply emerges from silence rather than from a bed of low level hiss and grain. More Than a CD Player: A Digital Hub for the Rest of Your System Treating the DP-450 as nothing more than a disc spinner undersells what it can do for the rest of a system. Behind the disc tray sit three digital inputs, USB Type B, coaxial, and optical, and the USB input alone will accept PCM audio up to 384 kHz at 32 bits and DSD up to 11.2 MHz, putting the DP-450's conversion section to work for a computer, a network streamer, or any other digital source you already own. The transport and the digital processing sections inside the DP-450 can also be split apart logically. Coaxial and optical transport outputs let you send the raw disc data out to an external DAC or to Accuphase's own DG-68 voicing equalizer for further sound field correction, while the analog output stage stays available for whatever source you are actively playing. Output level itself is adjustable in the digital domain from 0 dB down to minus 80 dB in 1 dB steps, which means the DP-450 can drive a power amplifier directly at a level you set and trust, without an extra analog volume stage in the signal path. A phase selector lets you invert the balanced output to correct for absolute polarity mismatches elsewhere in a system, and a programmable playlist feature lets you reorder tracks on a disc to suit how you actually want to listen, a small but genuinely useful touch for anyone who still buys physical albums. Where the DP-450 Sits Next to the DP-570 Buyers comparing Accuphase's CD lineup most often land between the DP-450 and the Accuphase DP-570, and the decision comes down to one question: do you own or plan to own SA-CDs. The DP-450 is a CD only player, full stop, while the DP-570 adds full SA-CD compatibility on top of standard CD playback, which is the primary reason it carries a meaningfully higher price. Both players share the same fundamental 4MDS+ four parallel circuit DAC architecture and the same Direct Balanced Filter output stage, and both share nearly identical chassis dimensions, so the core engineering philosophy and a great deal of the sonic character carry across the two models. Where they diverge is in refinement at the margins: the DP-570 measures slightly ahead on signal to noise ratio, dynamic range, and distortion, and its larger, SA-CD capable drive mechanism reflects the added engineering required to read that disc format reliably. For a buyer whose collection is entirely standard CD, or who has already moved their high resolution listening to digital files and streaming, the DP-450 delivers the great majority of what the DP-570 offers at a substantially lower cost of entry. For a buyer with an existing SA-CD library, the DP-570 is the only one of the two that will actually play those discs, and no amount of DAC performance on the DP-450 changes that. Key Specifications Disc Compatibility: CD, CD-R/RW, and data discs containing WAV, FLAC, DSF, and DSDIFF files. Not SA-CD compatible.D/A Converter: 4MDS+ principle, ESS ES9026PRO DAC chip, four parallel circuits per channelFrequency Response: 0.7 Hz to 50,000 Hz, +0/-3 dBTHD + Noise: 0.0008 percent, 20 Hz to 20 kHzSignal to Noise Ratio: 119 dBDynamic Range: 116 dBChannel Separation: 113 dB, 20 Hz to 20 kHzAnalog Outputs: Balanced XLR, 2.5 V, 50 ohms. Line RCA, 2.5 V, 50 ohmsOutput Level Control: 0 dB to minus 80 dB in 1 dB steps, digitalDigital Inputs: USB Type B (PCM up to 384 kHz/32 bit, DSD up to 11.2 MHz), Coaxial (PCM up to 192 kHz/24 bit), Optical (PCM up to 96 kHz/24 bit)Transport Outputs: Coaxial, OpticalPower Requirements: 120 V AC, 50/60 HzPower Consumption: 11 WDimensions (W x H x D): 465 mm x 151 mm x 393 mm (18.3 in x 6.0 in x 15.5 in)Weight: 13.7 kg net (30.2 lbs). 20 kg in shipping carton (44 lbs)Included Accessories: AC power cord, AL-10 audio cable, RC-140 remote commander, USB Utility 3 CD and setup guideFinish: Champagne gold front panelPrice: $7,975Warranty: 3 year parts and labor, administered through Accuphase's authorized US distributionAvailability: In stock Why Buy From All Elite Audio All Elite Audio is an authorized Accuphase dealer, which means every DP-450 we sell is sourced through Accuphase's official US distribution, fully covered under manufacturer warranty, and never a gray market or parallel import unit that could leave you without service support. We're a showroom built specifically for serious listening, and we'd rather you hear the DP-450 in a real system before you commit to one for your own. Call: 443-402-5055Text: 443-402-5064Visit: 1921 York Rd, Timonium, MD 21093 Frequently Asked Questions Does the Accuphase DP-450 have a built in phono preamp?No. The DP-450 is a digital source component with no analog inputs of any kind, which means it has no phono stage and cannot accept a turntable directly. It is designed purely to read digital sources, whether that's a physical CD in its tray or an external digital signal coming in through USB, coaxial, or optical. If vinyl playback is part of your system, you'll need a separate phono preamplifier or an integrated amplifier with phono capability built in. The DP-450's analog outputs are meant to feed directly into a preamplifier or integrated amp's line level input. Does the DP-450 play SACDs?No, and this is an important distinction within Accuphase's own lineup. The DP-450 reads standard CDs, CD-R/RW discs, and data discs containing high resolution audio files, but it does not have the hardware to read the SA-CD layer on a Super Audio CD. If your collection includes SA-CD titles you want to keep playing, you'll want to look at the Accuphase DP-570 or DP-770 instead, both of which add full SA-CD compatibility on top of everything the DP-450 already does. Does the DP-450 include a cartridge or any accessories I need to buy separately?The DP-450 ships complete with everything required to get it running out of the box. That includes an AC power cord, Accuphase's AL-10 audio interconnect cable, the RC-140 remote commander, and a USB Utility 3 CD with setup guide for anyone connecting it to a computer for USB playback. There's no cartridge involved since this is a CD player rather than a turntable, so the only things you'll need to add are the interconnects running to your amplifier if you'd prefer a different cable than the one supplied, and speaker cable and an amplifier to complete the rest of the chain. How does the DP-450 compare to the model above it, the DP-570?The two share the same fundamental DAC architecture and a nearly identical chassis footprint, so a great deal of what makes a DP-450 sound like an Accuphase carries straight up to the DP-570. The real difference is disc compatibility: the DP-570 adds SA-CD playback that the DP-450 simply does not have, and that added capability is reflected in a meaningfully higher price. The DP-570 also edges ahead on signal to noise ratio, dynamic range, and distortion figures, though the gap is the kind of refinement that matters most to listeners chasing the last percentage points of performance. For most CD only collectors, the DP-450 delivers the bulk of the Accuphase sound at a lower point of entry. What does 4MDS+ actually mean and why should I care?4MDS+ refers to Accuphase's proprietary approach of running four parallel D/A conversion circuits per channel off a single DAC chip rather than relying on one conversion path alone. Because each path's random noise is independent of the others, summing four of them together after conversion mathematically reduces the combined noise and distortion well below what a single conversion path could achieve. In practical listening terms, this is a meaningful part of why the DP-450 has such a quiet, composed background and such accurate reproduction of quiet passages and subtle details that a less sophisticated DAC implementation would simply lose. Can the DP-450 work as a standalone DAC for my streamer or computer?Yes. The DP-450's USB Type B input accepts PCM audio up to 384 kHz at 32 bits and DSD up to 11.2 MHz, and the coaxial and optical inputs handle PCM at slightly lower maximum rates, so any of these connections let you route a streamer, computer, or other digital transport through the DP-450's conversion stage and analog outputs. This means the DP-450 doesn't retire from your system even if you move primarily to streaming down the road. It simply becomes the DAC at the center of it. What is the Direct Balanced Filter and why does it matter?It's the circuitry that gives the DP-450's balanced XLR output and unbalanced RCA output their own independent filter paths rather than sharing a single circuit between them. Without this separation, using one output can subtly load down or interfere with the signal quality of the other, even if you're only connected to one at a time. With Direct Balanced Filter circuitry, whichever output you choose to use reaches your amplifier in its full, unaffected form, which matters most if you ever switch between a balanced and unbalanced amplifier or run both simultaneously for a comparison. What else do I need to build a complete system around the DP-450?At minimum you'll need a preamplifier or integrated amplifier to receive the DP-450's line or balanced output, a power amplifier if your preamp doesn't include one, and a pair of speakers capable of resolving the level of detail the DP-450 is capable of producing. A set of quality interconnect cables running from the DP-450 to your amplifier is worth the investment given what this player is capable of revealing. If you're planning to use the DP-450 as a DAC for a streamer down the line, a USB cable with a Type B connector or the appropriate digital cable for whichever input you choose will complete that connection. Is the Accuphase DP-450 covered by a warranty, and does it matter that All Elite Audio is an authorized dealer?Yes, the DP-450 carries Accuphase's standard 3 year parts and labor warranty when purchased new through an authorized dealer. This matters because Accuphase's warranty coverage and service support is administered through its official distribution network, and units brought in through gray market or parallel import channels are explicitly excluded from that coverage. Buying through All Elite Audio as an authorized Accuphase dealer guarantees your unit is fully covered and that genuine service support is available if you ever need it. Where can I buy the Accuphase DP-450, and can I hear it before I purchase?The Accuphase DP-450 is available now at All Elite Audio, an authorized Accuphase dealer with a dedicated listening showroom in Timonium, Maryland. We'd encourage you to come hear it in person before deciding, since a player at this level reveals itself best in a real listening session rather than on a spec sheet. You can call 443-402-5055 or text 443-402-5064 to ask questions or set up a demo, or visit us directly at 1921 York Rd, Timonium, MD 21093.
