Anthem Statement D1 First Look

There is quite a buzz building about the Anthem / Sonic Frontiers latest addition to the Home Theater A/V SSP (Surround Sound Processor) world with their new $5000 Anthem Statement D1 SSP. Audioholics forums alone has experienced a good deal of activity about the Statement D1 with some even comparing it to the latest high end receivers and processors.

This mighty looking processor seems to have quite the build quality and aesthetic appeal that appears to be a step up from their previous products which included the AVM2, AVM20 and AVM30.

The Anthem D1 SSP has just hit the market and already there's a v1.02 software update indicating that Anthem is being very pro-active in solving some of the initial software issues. If you are a new owner of the Anthem D1 SSP, you can download the firmware updates here.

Digital Architecture

The Digital Architecture of the new Anthem Statement D1 is comprised of the latest ADC, DAC and Processor technology as illustrated in the following table. All digital audio inputs and outputs are to S/PDIF electrical (75ohm, 0.5 Vp-p), S/PDIF optical (Toslink), or AES/EBU (110ohm, 5 Vp-p) standards. SRC output is 24-bit/192 kHz regardless of input.

i-Link, DVI, HDMI Features

We were curious to know why the new Anthem Statement D1 SSP shipped without an IEEE connection. There is a slot for it located on the back panel but at this time the connection is missing. Upon speaking to Anthem they have plans on activating this interface soon. Current D1 owners will likely have to ship their units back to the manufacturer or have their local authorized dealer handle the upgrade. Aside from requiring the connection, the Anthem D1 Processor implements the AKM AK4395 Digital to Analog Converters which do not appear to support DSP interfacing for natively decoding DSD and proper analog filtering for SACD. However according to Anthem they plan on converting the DSD signal to PCM for proper handling of bass management and time alignment, upsampling the signal and utilizing the filtering incorporated for PCM. This is certainly a valid method for handling DSD and minor sonic penalties (if any) are usually outweighed by the benefits of implementing proper bass management and time alignment. Some purists whom insist upon keeping DSD in its native format cant rest easy as there are some high performance universal DVD players that do just that. The Statement D1 offers a set of EXT analog inputs to elect that route if you so desire. Just like the AVM20, the D1 also has the ability to apply proper bass management and time alignment through an additional ADC and D/A conversion stage via their premium ADCs.

One choice DAC currently employed in some flagship universal DVD player, receivers and processors is the Burr Brown PCM 1792. This is a differential DAC capable of supporting multi channel DVD-A and SACD in their native formats with the highest resolution possible.

For detailed information on the AKM AK4395 and the Burr Brown PCM 1792 Digital to Analog Converters, feel free to download the following PDFs from the appropriate website.

AKM D/A AK4395 Specification Sheet (High performance PCM DAC utilized in the Anthem D1)

Burr Brown PCM 1792 Specification Sheet (This is a popular and high performance PCM/DSD DAC found in many flagship A/V receivers and Universal DVD Players)

When carefully comparing the Anthem D1 SSP AK4395 DACs to the Burr Brown PCM 1792 DACs there does seem to be some advantages (at least on paper) to the Burr Brown design such as improved SNR, Dynamic Range,and Channel to Channel Isolation. Theoretically they may prove to be ancillary benefits of sqeezing out even more performance from this well designed product. The downside is these DACs are significantly more expensive and may translate to additional cost to the end user with little to no sonic benefits. In addition, data sheets often quote perfect test conditions that are usually unobtainable in the real world. The best resolution currently realized in the analog domain is limited to about 20 bits or 120dB SNR of resolution, which according to the data sheets, both DAC's can deliver.

According to an AKM Application Note (see page 9) there does appear to be a new DAC AKM4396 that handles both PCM and DSD natively in a 28VSOP package (same as current 4395 DAC). So this may be the future solution and logical choice for Anthem to support DVD-A and SACD at full resolution via i.link. (see Anthems Response here)

Anthem does plan on releasing a hardware upgrade for the D1 in the near future that may add HDMI support, DVI and/or a proprietary interface which are quickly becoming available on many new A/V Receivers and forthcoming A/V Processors. Current owners should anticipate several weeks turnaround with any hardware upgrade like what will be required for the D1 to include these digital interfaces. Audioholics will do our best to promptly report any possible upgrades in hopes that those whom have already purchased the Anthem D1 can send their unit back quickly for a possible faster turnaround time.