The more massive and firm the surface, the less likely there will be problems. As specified in the manual, the phono preamp ADCOM GTP-450 amplifier should be set up in a stable, vibration-free location that is as close as possible to the other audio video components, such as a Denon AV receiver. Location plays a key role in device performance. The GTP-450 remote features a power On/Off button, Numeric keypad/Tuning selectors, CD player controls, input selectors, audio mute On/Off, and a master volume Up/Down control button. Perhaps the one complaint about the ADCOM GTP 450 amp is the remote control, which some users find is either too low or too high. The GTP-450 amplifier takes an audio stereo system to the next level, delivering a lush, rich, transparent, natural sound through your speakers. Enjoy the flow of smooth deep bass with crisp and articulate high tones through your speakers. The preamp delivers station monitor-quality FM reproduction, the highest signal quality allowed in broadcasting. The GTP-450 amp also features a two-channel preamplifier that minimizes hum and noise, five L/R RCA inputs, and a built-in tuner that produces broadcast-quality sound. Thanks to its Class “A” high-level output circuitry, the GTP-450 amps respond more accurately to musical input, producing the clarity, sound-stage accuracy, and superior resolution for which ADCOM is known. Engineered as an ideal match for any ADCOM high current power amplifier, the GTP-450 allows you to customize your music system to your own liking. The amps are equipped with ADCOM-specific engineering features that were used in their award-winning separates: their trademark linear gain amplifier and proprietary circuit topology. The GTP-450 amps have an excellent built-in tuner section that employs accurate quartz synthesizer technology to deliver on excellent FM/AM reception. The GTP 450AM/FM stereo turner preamp is ADCOM’s most affordable remote controlled amplifier, yet it’s sonically superior to many separate preamplifier/turner stereo combinations that are far more expensive. Your search for an amplifier that produces excellent audiophile quality ends with the GTP-450.