Firestone MASS PreAmp forforstærker er en smart lille forforstærker med remote control, 2 x line-in og 1 line-out.

Med remoten tændes, slukkes og styres volumen ligesom der kan vælges hvilken af de 2 lydkilde indgange der er aktive. LED display med lydniveau på front. 

Specifications

	Circuit Structure : Infrared remote control with pre-Amplifier
	Power Structure : Switching power supply, Soft-Star circuit
	Control Mode : Stand by / Power on / Volume up / Volume down / Input Select / Mute
	Gain Range : -95.5dB to 31.5dB
	Circuit Protect : Output short / over current protect
	Volume Control Chip : TI - PGA2310
	Audio Performance (1kHz sine wave, 2Vrms output, 24-bit / 48kHz)
	Frequency response (From 40Hz to 15kHz) : 40Hz +0.01dB, 15kHz -0.03dB
	Noise level (1kHz, A-Weighted) : -107.5dB
	Dynamic range (1kHz, A-Weighted) : 107.5dB
	THD% : 0.0018%
	Stereo crosstalk : -100.0dB
	Housing dimensions : 117 x 80 x 50 mm (D x W x H). Housing only without parts 'sticking out' like switches, buttons, connector parts, etc.
	Weight : 232 gram (without external power supply)

Connectivity

	Line Input : 2 pcs RCA jack
	Line Output : 1 pce RCA jack

System Requirements

The MASS works with all equipment with Line-Out function to serve as input for the Mass.