It can play 3-inch discs without an adaptor ring. Its disc-transport mechanism is made of metal, unlike the light, plastic construction used in low-cost players. The Onkyo DX-7500 is a heavy, solidly constructed player. The lower part of the display shows the status of the program memories, including the remaining tracks on the disc or in the program and the order in which they will be played. The LAP/REM button toggles the time display, and there is an index button for cueing. The easily read white front-panel display of the DX-7500 shows track and index numbers and elapsed or remaining times on the track and disc. Besides the analog and digital outputs (optical and coaxial), the rear apron has two small phone jacks for linking the DX-7500 to other Onkyo audio and video components for unified system control. The volume knob is motor-driven so that it can be operated from the supplied wireless remote control. Unlike most CD players, the DX-7500 has a front-panel volume control for its variable analog outputs as well as the headphone jack. Onkyo cd player reviews manual#The manual warns that recording on a cassette deck from the direct outputs may result in "beat" sounds on the tape similar to those sometimes experienced when recording from an fm tuner with inadequate ultrasonic filtering. The direct output bypasses the player's analog filtering, minimizing the circuitry between its d/a converters and the system amplifier. The rear of the DX-7500 has three pairs of analog output jacks, identified as fixed, variable, and direct. It also provides direct keypad access to any numbered track. The player has a shuffle-play mode, in which all the tracks on a disc are played back in a random order. The memory system can be programmed to play up to twenty tracks of a CD in any order, and a Memory Edit feature allows the program to be modified at any time. When you're copying a CD, this feature automatically puts the player into pause mode at the end of the tape's first side to allow the cassette to be turned over. Besides the usual operating functions, including repeat of a track, disc, or any selected portion, it has a Time Editing feature that determines how many tracks can be accommodated on each side of a tape cassette. In addition to its internal sophistication, the DX-7500 offers almost every feature one could hope to find in a CD player. The analog audio outputs are supplemented by two digital outputs (electrical and optical) for use with an external d/a converter. Optical coupling between the digital and analog circuitry of the DX-7500 eliminates the possibility that digital signals could leak into the analog sections and degrade the output quality. Onkyo's Opto-Drive system is claimed to completely eliminate any electromagnetic interference from the outputs of the d/a converters by using phototransistors instead of diodes to regulate the power-supply voltage to the converters. The player also makes extensive use of optical signal transmission and isolation techniques. It features dual 18-bit digital-to-analog (d/a) converters with eight-times oversampling (at 352.8 kHz). The Onkyo DX-7500 is a full-featured CD player incorporating the latest digital technology, but it is priced just above a typical midrange player.
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