The claimed frequency response is a very good 20Hz-50kHz, ☐.3dB. Distortion is a minuscule 0.005% for MM, 0.002% for MC. These specifications are relatively typical. The 651P’s MC input is designed to accept an input of 0.5mV at 100 ohms impedance, the MM input for 3.5mV at the typical loading of 47k ohms. The warranty is three years, parts and labor - pretty good for the price. The RIAA equalization circuit is passive and uses, in CA’s words, “multi-parallel capacitors to achieve exceptional RIAA accuracy of only 0.3dB up to 50kHz.” Parts and assembly quality are top-notch. The input stages contain discrete low-noise transistors instead of the more common integrated circuits, while the gain stage is single-ended class-A, with minimal negative feedback.
The subsonic filter is there to eliminate any undue low-frequency resonances caused by the combination of a tonearm and cartridge that could wreak havoc on electronics and speakers: a woofer activated by a subsonic signal is not a pretty sight the action can actually destroy the cone.Īccording to Cambridge Audio’s website, the Azur 651P is designed to offer high-quality amplification and accurate RIAA equalization. The rear panel is well populated, with, from left to right: stereo moving-coil RCA inputs, stereo moving-magnet RCA inputs, a turntable ground, a switch to choose between MM and MC inputs, a subsonic filter off/on switch, stereo RCA output jacks, and a jack for power from the wall-wart power supply (provided). The front panel is very simple: at the extreme left are an off/on switch and a tiny LED, and that’s it. The Azur 651P is a metal box measuring only 8.5”W x 1.8”H x 5.2”D, available in silver or dark gray. The Azur 651P ($249 USD) is the top such model in Cambridge’s line. Most such models built from the mid-’80s to the present have only line-level inputs.įor that reason, companies such as Cambridge Audio offer phono stages for modern electronics. After CDs became the primary medium for music, there was little reason for manufacturers to expend the extra money necessary to include a phono stage in their integrated amplifiers, preamplifiers, and receivers. And that can present a problem for audio and music aficionados whose electronics lack a phono stage or preamp that can boost the very low output of a phono cartridge to a level an integrated amp can use. Many popular rock groups now release their recordings on vinyl, in some cases exclusively. In 2013, vinyl accounted for nearly 3% of all recorded music sales. No, they’ll probably never replace downloads, or even CDs, in sheer numbers, but the format, left for dead in the 1980s, has regained status. E.A.T.It’s no secret that LPs are making a comeback. Filtration is in three steps, this result is a perfect S/N ratio and undisturbed musical experience. It has subsonic filter with mild effect which doesn't affect audible frequencies in unpleasant way.Ī very important part is the advanced power supply that uses anode voltage regulation and a well filtrated voltage. It has a massive aluminium chassis, large possibility of adjusting the impedance, capacity and gain. Phono preamplifier doesn't have any global feedback. RIAA curve is equalised fully passive and splitted in two steps which allows to achieve perfect impedance matching between the gain stage and equalization block.
E-glo S – is a hybrid phono preamplifier that utIlizes ECC83 tubes (twin triode) in the first and second gain stages In order to get higher gain and lower noise we use in the first stage a cascode connection of tube with with two paralelly connected low-noise J-FET transistors.
0 kommentar(er)
