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Marantz NA7004效果如何？糾結(jié)在幾款播放器之間，麻煩大家給些建議。謝謝！ 我想先改善系統(tǒng)的前端播放音源的短腳，買個網(wǎng)路數(shù)碼器用模擬線連LX90的直通聽音樂先對付一陣，以后再考慮后級的問題。 Marantz NA7004就HIFI的角度說，他的效果如何，我主要用它來聽APE、FLAC和WAV。Marantz的聲音有什么特點(diǎn)？它和羅技Transporter及Yamaha NP-S2000比效果怎樣？大家還有什么更好的類似產(chǎn)品推薦，價格15000封頂。 喜歡甜的有韻味的聲音?。?！不知道是否要求太高，別見笑。 以下是網(wǎng)上搜到的產(chǎn)品介紹： NA7004是連接您最喜愛的音樂的理想裝備，不管是它在何方-無論從PC機(jī)、外置硬盤，甚至通過互聯(lián)網(wǎng)收音機(jī)或Napster音樂服務(wù)欣賞到地球另一邊的音樂。所有這些NA7004全都可以連接。因?yàn)樗捎昧嘶谝纛l流DLNA1.5標(biāo)準(zhǔn)的技術(shù)。此功能在其他產(chǎn)品上也能找到，但在本設(shè)備上它更多地針對音樂愛好者和高保真音響發(fā)燒友，因?yàn)闉榱舜_保音頻的頂級質(zhì)量 Marantz 已盡了最大努力：堅固的箱式結(jié)構(gòu)、超強(qiáng)電源、音頻輸出級采用著名的HDAM-SA2模塊并通過定制元件精細(xì)調(diào)整。該網(wǎng)絡(luò)音頻播放機(jī)甚至可以作為家庭未安裝網(wǎng)絡(luò)的用戶的理想選擇。只需將 NA7004 通過背后的 USB 接頭連接到您的 PC 機(jī)上，PC 機(jī)就會作為外部聲卡識別出NA7004。這是享受卓越品質(zhì)音效的最直接方式。并且還提供：數(shù)字輸入、iPod數(shù)字兼容USB和可選藍(lán)牙接收。不僅在功能上極其多樣化，令人驚喜的是通過大顯示屏操作起來還特別方便?？傊琋A7004可成為您面向眾多音樂電臺、播客、紀(jì)實(shí)頻道以及更多其他媒體的門戶-全都享有最好的音頻品質(zhì)。 數(shù)/模轉(zhuǎn)換====多位，Delta-Sigma DAC 數(shù)模轉(zhuǎn)換芯片======CS4398 數(shù)字濾波器===== CS4398 噪音整形器====== CS4398 低通濾波級========= HDAM SA2 輸出緩沖器====== HDAM SA2 耳機(jī)放大========= NJM2068  數(shù)/模轉(zhuǎn)換====多位，Delta-Sigma DAC 數(shù)模轉(zhuǎn)換芯片======CS4398 數(shù)字濾波器===== CS4398 噪音整形器====== CS4398 低通濾波級========= HDAM SA2 輸出緩沖器====== HDAM SA2 耳機(jī)放大========= NJM2068         
Hi-End音響圈前所未有的大新聞！美國權(quán)威發(fā)燒音響雜志Stereophile將Slim Devices最新推出的Transporter放上最新一期2007年二月號封面，標(biāo)題為「無線傳輸音響達(dá)到Hi-End境界」（WIFI HI-FI GOES HIGH-END），評論提到，Transport相較于售價三倍的Ayre C-5xe SACD/CD唱盤，在分辨率表現(xiàn)幾乎不分軒輊！
Is a high-end music server the audio equivalent of polishing a turd? I've been hearing this put-down since I first became an advocate for digitally stored audio almost five years ago. At first, the argument was that computers had no place in a listening room. Wireless music servers took care of that argument. Then the big—and valid—concern was lossy-compressed formats, but ever-cheaper digital storage made uncompressed and losslessly compressed storage a slam dunk. Well, said the still-unconverted,you can't argue that high-end DACs don't perform better than the cents-per-thousand mass-market chips included in players and server stations. A good point, but one quickly overcome by companies like[url=]Sonos[/url]and[url=]Slim Devices[/url], who added digital outputs to their offerings. But when I'd mention how good my combo of Slim Devices Squeezebox and[url=]Musical Fidelity X-DACV3[/url]sounded playing my Apple Lossless Compression (ALC) files, several of my audiopals would still demure. "Surely you're not suggesting that a $300 front-end can sound as good as your[url=]Ayre C-5xe[/url]universal player?" Well, perhaps not—but near enough to clearly be high-end, and more than enough to offer hours of listening pleasure. I must not have been the only one hearing such comments, because Slim Devices has now conjured up the Transporter, which it bills as "streaming digital music with sound quality that surpasses even the most exotic compact disc players."Everythingabout the Transporter has been designed to pacify audiophiles, from a hard-anodized chassis of "aircraft-grade aluminum" (per Slim Devices) to its backlit remote control to its component parts and, yes, DAC. I guess some folks will still argue that a digital file, no matter how pristinely transferred and handled, is still a turd, but I guess it's all in the ear of the beholder. After all, I have a pair of cufflinks made from coprolite: dinosaur droppings that have, through the ages, become fossilized and quite beautiful, especially when treated as semiprecious stones. In short, youcanpolish a turd. Properly processed, even the most unpromising material can become a thing of beauty. The tourist transports his own values The Transporter uses AKM AK4396 multibit/Sigma-Delta DACs and can accept digital inputs on coaxial, optical, and BNC S/PDIF, as well as AES/EBU balanced connectors. Internally, the Transporter, like the SB3 before it, carefully manages clock signals and employs special crystal oscillators and multiple stages of "super" power regulation, based on Walt Jung's designs. A word-clock input allows the user to sync to an external clock source, and the Transporter decodes WAV, AIF, MP3, WMA, and FLAC files with 24-bit resolution at a sampling rate of 44.1kHz, 48kHz, or 96kHz. The Transporter's CPU is a 325MIPS, eight-way, multi-threaded device with an 8MB audio buffer and SlimDSP, a software-based digital signal processor (DSP) that resides in flash memory and is loaded into fast static memory "dynamically";ie, as needed. This isn't conventional DSP of the sort you'd find in an A/V receiver; rather, it's designed to decode compressed files on the fly so it can transmit uncompressed 24-bit PCM over the network's WiFi link. The Transporter has single-ended (RCA) and balanced (XLR) analog outputs, as well as coaxial, TosLink, BNC S/PDIF, and AES/EBU digital outputs. Ethernet and RS-232 inputs are also included. Analog and digital signal paths are kept separate. The balanced output remains consistent, but volume can be controlled through the single-ended outputs using a combination of digital attenuation and a set of resistor jumpers mounted on the circuit board: You set the approximate maximum volume with the jumpers and fine-tune with the digital attenuation. If you don't need to tweak it much with the digital control, you should be able to vary the volume without significant data loss. (Because I was using the Transporter with several high-end preamps, I kept the digital attenuation off during my audition, but it's there if you need it.) One of the slickest features of the Transporter is its huge, two-part display, which is nigh on infinitely configurable. I generally used the left side to monitor whatever data were playing, and dedicated the right side to the nifty faux-analog VU meters to monitor the output. It was cool, if perhaps a little pointless. On the other hand, I had no need to scroll RSS feeds, weather data, sports scores, or other information across the display, so some harmless retro-visuals certainly didn't hurt. Smack dab in the middle of the front panel is a large control knob, the TransNav, which employs dynamic tactile feedback to rapidly scroll through and choose from tons of information, including even the longest playlist. If you don't want to operate the TransNav up close and personal, the remote control offers an equal level of domination, though it lacks the same wow factor. What hours of transport we shall spend The Transporter, like the SB3, is far more versatile than a survey review can cover, primarily because Slim Devices is dedicated to open source development. Company head Sean Adams is obviously an immensely talented designer, but Slim also has a fanatical community dedicated to developing plug-ins and macros for the SB3 and the Transporter. Ifyoudesire a certain function, chances are someone else has too—and may even have created it. As Adams commented, "In a sense, with open source, we have more software developers working for us than Microsoft has thrown at Vista." Visit the[url=]Slim Devices Forums[/url]for a look at the possibilities. Also working for Slim Devices is an unusually attentive and thorough customer-service staff. Although I had already downloaded and was running the SlimServer program on my Mac for my SB3, I had a small problem getting the Transporter to shake hands with my WiFi network. Dan of customer service talked me through it with good humor and patience. Late in the review, my Transporter refused to power on when I moved it downstairs for a final once-over. I called the help line again without identifying myself. Dan and I quickly tried a hard-power-on and a software-enabled power-up, and when both proved unsuccessful, he immediately said, "Let's get that bad boy back in here, so you can have it back before next weekend." I was impressed and a little sheepish—I'd suddenly recalled an epic cat battle that had sent the Transporter crashing to the floor a few weeks earlier. It worked after that, but I'm betting that something was loosened enough to finally lose contact when I moved the unit downstairs. My bad. Well, Huckleberry's probably, but I'm a bad cat owner for not better securing the Transporter. Three dollars and it only transports matter? I integrated the Transporter primarily into my main listening room's he-man rig, which included my[url=]Ayre C-5xe[/url]universal player,[url=]K-1xe[/url]preamplifier, and MX-R monoblocks,[url=]Krell Evolution 202 and Evolution 600[/url]preamp and power amps, and[url=]Dynaudio C-4[/url]and Vandersteen Quatro Wood loudspeakers. All of these components are capable of highlighting minor differences, let alone compromised file formats, so I didn't bother auditioning lossy MP3s or, for that matter, Internet radio, which seldom gets above 128kbps. It's not a matter of audio snobbery, it's merely facing reality: If your digital library isn't hi-rez, you don't need a Transporter. For this reason, I wasn't particularly disturbed that the Transporter couldn't play the few files I've downloaded from Apple's iTunes Music Store. It's true that I couldn't play them because of Apple's use of Digital Rights Management, but their 128kbps quality would have eliminated them even if the crippleware "protection" of DRM hadn't already done so. The same is also true of just about any other DRM'd download I can think of—the Transporter won't play 'em and I wouldn't have wanted to. Dreams transport us through the underside of our days I've already explained that I had to call Slim Devices' customer support to get the Transporter up and running, but after that relatively painless introduction, my experience was pretty much set it and forget it. Forgotten, too, were such problems as searching a multiroom, multifloor warren of music rooms for the recording I wanted to play (or refile—as if I ever worried too much aboutthatone). If I had the recording on my music library's hard drive, it was only a quick twist of the TransNav (or a few remote button presses away. And because I could search by artist name, album or song title, or genre, I could even find things I only vaguely remembered having, which made for a constant voyage of discovery through my own music collection. I thrilled to the mutual pleasure that the Grateful Dead got out of their 12-zillionth for-the-first-time-ever exploration of "Dark Star," onHundred Year Hall(CD, Grateful Dead GDCD 40202). I marveled at the fluidity of Glenn Gould's traversals of J.S. Bach'sGoldberg Variations(CD, Sony Classical/Legacy S3K 87703) late in the evening. The first thing in the morning, I had my eyes opened by Robert Silverman's incisive account of Beethoven'sDiabelli Variations(CD,[url=]Stereophile STPH017-2[/url]). And yes, beyond the effortless musicality, I was completely satisfied with the Transporter's sound. The bass was taut, the midrange unforced, the top end smooth and extended. The Transporter wasn't simply "good for what it was"; it wasgood. 主箱：KEF Reference 205/2 功放：Pioneer LX90 中置：KEF XQ50C 環(huán)繞：KEF XQ20 低音炮：Velodyne DD12 音樂播放器：YAMAHA NP-S2000 藍(lán)光：Panasonic BDT300 高清機(jī)：RCA 920 電視：Panasonic P50VT20C 耳機(jī)：Sennheiser HD650 耳放：清華吳剛T-2.6F 線材：華敏4平方及其他普通貨 |
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