Golden Age Project Pre-73 DLX, 1-Channel Preamp, Vintage Style electronics. No intergrated circuits in the signal path. Tantalum thomann capacitors in the signal path. Selectable 1073-style high pass filter, 50Hz, 80Hz, 160Hz and 300Hz. Output Attenuator -7, -14, -21 and -28 dB (located after the output transformer) Maximum gain on the mic input is 80 dB, enough to handle passive ribbon mics with thomann quiet sound sources. Gain range on the Line input: -20 to + 10 dB. Switchable impedance on the mic input, 1200 or 300 Ohms, will change the tone of most mics. Switchable phantom power and absolute phase. A high-impedance instrument input for any thomann sound module, electric guitar or bass. A simple but effective 4-step LED output level meter. The output level controls makes it possible to make fine gain adjustments and also to overload the main gain stage(s) for more character and then lower the signal to thomann a suitable level before the output stage. Combo XLR/TRS input jacks and separate output XLR and TRS jacks for flexible connections. Insert jack for inserting EQ´s and other units. External high power power supply to avoid interaction with the audio circuits and transformers