Master Room XL-305 Acoustic Chamber Synthesizer, Analog  Vintage Spring reverb.Is working great, beautiful sound, some knob caps are missing but this doesn´t affect the device in any matter, is a very heavy pice of gear.Please see my 100% positive feedback to bid with confidence.World wide shipping.Thanks.The Master-Room XL-305 is a unique design approach in self-contained reverberation systems. This "Acoustic Chamber Synthesizer" incorporates new technology that stems from Vears of research and analysis of "live" chambers currently in use in the recording industry. Properties such as room volume, echo densitv, and reverberation time versus frequency were studied. The most desireable characteristics of these live chambers are incorporated into the XL-305 The result: The sound of a live acoustic chamber in a rack-mount package. A live chamber does not have the boing, twang, and flutter that are normallv found in compact reverberation units. The XL-305 produces none of these unwanted sounds. A percussive attack, or any transient signal, is difficult for most compaft reverbs to reproduce naturally. Under these conditions, a reverb is most likely to produce undesireable sideeffects. The performance of the XL-305 under transient conditions is outstanding. The XL-305 offers twochannel stereo capability, and is easily switched to stereo imaging of a monaural signal orfull mono operation. Each channel features an INPUT LEVEL control, LED CHAMBER DRIVE indicators. and an 0UTPUT MIX control to blend the direct and reverberated signals. Front panel oUTPUT LEVEL adjustments are provided for easy adaptation to various operating levels of other equipment. AUXILIARY INPUTS ANd OUTPUTS IOCAICd on the front panel automatically defeat the rear panel connections, allowingXL-305 Specifications NPUT(Ref 0dBv:0775vots) DECAYTME(atI kHz, octave noise, T60) 35seconds N,,linimum Leve 12 dau N,,laximum Leve +'18 dBv EQUALIZATIoN Impedance (bai I 2Ok ohms TVpe: Reciprocal Peak/Dip center Frequencies 150. 600.2K and 6K Hz OUPUT Contro Range X12dB Source mpedance 15 ohms Nomina Level +4dBm TEVEL NDICATORS Can Adiustment Range 20 dB Type: Peak Responding N4aximum Leve (lnto 600 Ohm Load) +'T8 dBm rms Circuit LocaUoni At Charnber Drve Display and Levels lndicated Creen 6 Yellow. 0l FREQUENCY REsPoNsE {Ref 1 kHz) Red' +6 dB Direct Channe 20-20k Hz +0. -2 dB