Rotel DACs

RDD-1580

http://www.rotel.com/product/rdd-1580
Rotel’s new digital-to-analog converter envelops the listener in the most accurate audio reproduction possible from any digital source, whether it be legacy PCM sources or the latest digital file formats.

At its heart, the RDD-1580 makes use of Wolfson’s WM8740 stereo digital-to-analog converter. The RDD-1580 uses two WM8740s in a complementary configuration, which reduces noise and distortion well beyond that a single converter can provide.

Another RDD-1580 advantage lies in its input flexibility. A front panel USB input supports Apple iPod®, iPhone® and iPad® as well as streaming via Bluetooth with the included adapter. The rear panel PC-USB input supports audio up to 24-bit/192kHz in asynchronous mode. Two sets of rear panel RCA-style coaxial and optical digital inputs are optimized for LPCM data streams. This includes CDs 16-bit/44.1kHz standard up to high definition sources with 24-bit/192kHz audio data.

A Rotel-designed and manufactured toroidal transformer sits at the foundation of the RDD-1580’s well-regulated power supply. Advanced custom-designed slit-foil capacitors provide electrical storage capabilities to ensure substantial and stable operating voltages and current to feed the critical circuit stages.

The RDD-1580 provides both single-ended and balanced outputs with RCA and XLR connectors respectively. Recognizing today’s changing tastes in audio sources, the RDD-1580 even provides high-current charging capability (2.1 amperes) for an iPad® or similar device to reduce clutter and increase needed desk space while expanding your audio source options.

Built for stunning sound quality, but designed for today’s ever-increasing digital world, the RDD-1580 offers a first rate combination of superior sonics and convenience.
DIMENSIONS (W × H × D) 17″ × 2.13″ × 12.5″
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 25W
STANDBY POWER CONSUMPTION 0.5W
NET WEIGHT 5.1kg (11lbs.)
TOTAL HARMONIC DISTORTION (THD)(20Hz–20kHz) <0.004%
FREQUENCY RESPONSE 10Hz – 95kHz ±3dB
S/N RATIO (IHF “A” Weighted)128dB
DECODABLE FRONT USB
FORMATSMP3, WAV, WMA, Ogg Vorbis(up to 48kHz 16-bit)
COAX/OPTICAL DIGITAL INPUT SIGNALS LPCM (Up to 24-bit/192kHz)
PC-USBUSB Audio Class 1 (up to 24/96)
USB Audio Class 2 (up to 24/192)

It’s perfectly fine to play your records….really.


I read in the recent issue of Copper magazine an article written by a gentleman who is one of the leading experts in room and system set-up titled: “LP Playback: Is It Really Reference Quality?” http://www.psaudio.com/article/lp-playback-is-it-really-reference-quality/
So I was double shocked when I read the article which was not about the title subject, but more about trashing vinyl as a medium and trying to convince folks that listen to vinyl whether exclusively or not, that they are not hearing all the music as intended. I was also shocked because the article is not in his field of expertise, but should be. In other words, would he go into a person’s home to do a system and room set-up and then refuse if that person wanted to include an analog front-end for vinyl playback? Judging by some of the things he wrote it sounds like there would be much bias. It’s perfectly fine to have ones own bias, but if you are doing a service of any type in audio, including writing about certain things you have to put certain personal bias aside if you want to help someone or at least be up front about it. I use and enjoy many different mediums myself and it would make no sense to focus solely on one. On top of that, considering this site was designed to be about music and a help to those seeking better sound or just starting out in audio reproduction, etc. it would be a disservice if I was bias against all but one medium or music genera, etc. and telling you that you are wrong for considering anything else. If I wanted to do that, my mission statement and this site would look far different.

So the article was supposed to be about whether or not vinyl LP playback can be considered reference quality, but sadly, the author fails to address that almost completely. The article just reads like one of Trump’s speeches, a rant against vinyl LPs and analog gear with a few insults thrown at those who listen to vinyl LPs and contradictions and half-truths twisted to fit an agenda.

First of all, while I have heard many an “audiophile” claim that vinyl LP playback is reference quality automatically and then qualifying that by stating that as long as one is using a five-figure turntable and cartridge in a six-figure system. The irony is that these same “audiophiles” will also claim that digital is the way to go qualifying it the same way. Not being an audiophile myself and being of a more scientific background, if you will, I don’t have such automatic responses. I believe it can be both ways in all media formats, just as there is good and bad in everything. The bottom line though is that it really is in the ears of the beholder. In other words, it is almost all subjective. The problem is that the article in reference does not really address that. Continue reading

Rotel CD Players

Rotel CD14

http://www.rotel.com/product/cd14
The CD14 design begins with a carefully engineered power supply to ensure separate, ripple-free voltage and current to both digital and analogue circuits.
DIMENSIONS (W × H × D)17″ × 3.8″ × 12.3″
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 15W
STANDBY POWER CONSUMPTION <0.5W
NET WEIGHT 5.9kg (13lbs.)
TOTAL HARMONIC DISTORTION (THD) 0.002% @ 1kHz
FREQUENCY RESPONSE 20Hz – 20kHz ±0.5dB
S/N RATIO (IHF “A” Weighted) >118dB
DYNAMIC RANGE >99dB
DIGITAL TO ANALOG CONVERTERS Wolfson 24-bit/192kHz
CHANNEL BALANCE ±0.5dB
CHANNEL SEPARATION >115dB @ 10kHz

RCD-1572

http://www.rotel.com/product/rcd-1572 
One of the RCD-1572’s most important features is the Wolfson WM8740 digital filter/stereo digital-to-analog converter processes digital signals up to 24-bits in length at sampling rates from 8 kHz to 192 kHz.

The post-converter analog circuitry benefits from crafting the sounding pathway from the DAC’s internal output to RCA and XLR rear panel connectors that bridge the gap between the RCD-1572 and down-stream components. All circuit components – resistors, capacitors, inductors – are chosen only after their positive contribution to sound quality were quantified and verified qualitatively by extensive listening sessions.

All of these circuits draw on a power supply based on an oversized custom Rotel-designed and precision-manufactured toroidal power transformer that, in turn, feeds precise rectifiers, tight-tolerance voltage regulators, and advanced Slit-Foil low-ESR storage capacitors, all globally sourced to ensure musically accurate operation under even the most demanding conditions.
DIMENSIONS (W × H × D) 17″ × 4″ × 12.6″
POWER REQUIREMENTS 120V, 60Hz
POWER CONSUMPTION 15W
STANDBY POWER CONSUMPTION <0.5W
NET WEIGHT 6.7kg (15lbs.)
TOTAL HARMONIC DISTORTION (THD) 0.002% @ 1kHz
FREQUENCY RESPONSE 20Hz – 20kHz ±0.5dB
S/N RATIO (IHF “A” Weighted) >118dB
DYNAMIC RANGE >99dB
DIGITAL TO ANALOG CONVERTERS Wolfson 24-bit/192kHz
CHANNEL BALANCE ±0.5dB
CHANNEL SEPARATION>115dB @ 10kHz