Κώστας Φ.
Truth hurts. Here's a teddy bear.
- Μηνύματα
- 8.978
- Reaction score
- 895
Το UltimateAV δοκιμάζει τον πολυκάναλο ψηφιακό ενισχυτή της Rotel, RBM-1077. Χρησιμοποιεί τα modules της ICEpower. Σαφής η στροφή (και) της Rotel στην τάξη D.
Αποσπάσματα απο το review:
"While the landscape of Class D amps hasn't changed radically, their performance has steadily improved, and the number of serious Class D amps on the market has grown quietly but steadily. And with companies recognized for great sounding electronics climb on board, audiophiles are starting to take notice.
Rotel, a company long known for high quality, high value audio electronics, has taken notice, too. The RMB-1077 ($2499) is its first multichannel Class D amplifier. It offers seven channels of amplification, rated at 100Wpc into 8Ω. All this comes in a package weighing in at just over 17 lbs. that's compact enough for a 10-year old to carry around without breaking a sweat.
...
While the RMB-1077 falls broadly under the Class D banner, the technology used here is a relatively recent refinement on Class D design. Known as ICEpower (ICE stands for Intelligent, Compact, Efficient), the rights to the design were acquired by Bang & Olufsen (B&O) several years ago in a co-ownership arrangement with its inventor. ICEpower is now in use in full range, audiophile-grade amplifiers and receivers from BelCanto, PS Audio, and Jeff Rowland Design (plus, of course, Rotel and B&O.).
...
Conclusions
While I don't expect Class D amplifiers to displace conventional solid-state amps overnight, I wouldn't be surprised if they eventually dominate the market. In the Rotel RMB-1077, that future may be here now. This is an outstanding amp by any standard—Class A, A/B, or D.
Keep in mind too that if the RMB-1077 doesn't offer enough power for you, Rotel has just released two new amps using the same ICEpower technology, one a monoblock ($1499) and the other stereo ($2499). Each offers a teeth-rattling 500Wpc!"
FULL REVIEW
Αναλυτικά specs:
Power output: 100Wpc x 7 into 8Ω (all channels driven from 20Hz-20kHz, 0.03% THD). 200Wpc into 4Ω (0.09% THD).
Frequency response: 10Hz-80kHz (±3.0dB)
Total harmonic distortion: 0.03% (from 1W to continuous rated power, 20Hz-20kHz, 8Ω)
Damping Factor: 400 (at 8Ω)
Input sensitivity/impedance: 1.2V/8.3kΩ
Signal to Noise ratio: 105dB (IHF A)
Power consumption: 400W (70W idling, 3W standby)
Dimensions: 17.2" x 2.9" x 16.4" (WxHxD)
Weight: 17.2 lbs.
Price: $2499