ламповый

Etymology
. Internet slang usage stems from the audiophile community and the supposedly smooth, mellow sound produced by traditional vacuum tube audio equipment.

Adjective

 * 1)  lamp
 * 2)  tube, valve relating to vacuum tubes
 * 3)  mellow, heartful, sincere
 * 1)  mellow, heartful, sincere
 * 1)  mellow, heartful, sincere