The TR-1D features new digital amplifier technology and represents a considerable improvement in performance over its brother, the TR-1.

An internal Class D amplifier delivers 200 watts of fast, clean power for better control of the TR-1D's 10" drive unit and this results in deep and accurate bass extension for music and movies. A 24Hz roll-off rate combined with Gallo's patented S2 technology means that the TR-1D can handle an action soundtrack or transient musical piece better than any other subwoofer in its class.

As with the TR-1, all controls are conveniently and discreetly located on a flat rear panel and the unit is available in a room friendly black finish.

In room Frequency Response	24Hz – 180Hz +/- 3db
Digital Power Amp	200 watts rms 400 w max output
Phase	0/180 switch
Low pass	50 – 180Hz, continuously variable with LFE by-pass switch
High pass	100Hz fixed, 1st order on high-level output
Enclosure type	hardened steel with Patented S2 Bass loading
Woofer	10" long throw ceramic-coated aluminium
Bass EQ	0, +3dB +6dB 30 Hz center frequency
Power	Auto/On/Off: toggle Switch
Dimensions	10.75" W x 12" H x 13.5" D (273mm W x 305mm H x 331mm D)
Weight	26 lbs
Connections	2 female RCA phono inputs and 2 female RCA phono outputs (pass-thru) , 5-way gold plated binding posts
Input power	110/220 VAC 50/60Hz switchable with removable power cord.