ROYAL OLDIES is equipped with an active type EQ on a full-fledged vacuum tube amplification circuit, and outputs sound and sound pressure that cannot be imagined from its size. The pre-circuit is equipped with a pre-main circuit designed based on the second channel of Ampeg famous vintage SVT, giving you the warm sand characteristic of vacuum tubes. To properly drive the tubes, the 12V power supply is internally converted to a voltage of 250V or higher. We have eliminated SVT's unique EQ tone stack and designed and combined an active type 3Band EQ. This allows for finer boost-cutting of the band compared to passive. TREBLE uses a band of approximately 2.8kHz without sacrificing the analog feel, and BASS generates SVT Ultra Lo by setting the knob to its maximum value. You can switch the MID between 400Hz and 800Hz with the switch at the bottom. As the name suggests, it is highly recommended for players aiming for nuance and feel. Large heads from JAZZ to ROCK are at your feet. Royal Oldies will make your dreams come true. 〈specifications〉 ・Size: 62 x 118 x 39 mm ・12VDC adapter only（500mA or more） ・JJ 12AX7 Valve ・True bypass ・Product specifications and parts are subject to change without notice.