VTB-1 Tube Blend Mic Preamp

VTB-1 Tube Blend Mic Preamp Specifications:

• Mic In to Bal Out: 72dB (60dB preamp gain, 12dB output gain)
• Line In to Bal Out: 42dB (30dB preamp gain, 12dB output gain)

• -20dBu input-Mic; 0dBu input-Line
• Both measured at +15dBu output
• Mic or Line In to Bal or Line Out: <0.0015% (Blend set full CCW- no tube)
• Mic EIN: -128dBu (150 ohm source, 60dB gain)

• -20dBu input, +15dBu output
• Mic In to Bal Out: +0 /-0.25 dB
• 0dBu input, +15dBu output
• Line In to Bal Out: +0 /-0.5 dB

• <+/- 15 degrees

• Mic Input (Rear switch in 200 ohm position): 2000 ohms
• Mic Input (Rear switch in 50 ohm position): 300 ohms
• Line Input (Front panel TRS jack): 1.5 meg ohms

• Male-XLR Balanced Output: 100 ohms (50 ohms each leg)
• TRS Line Out: 300 ohms (Impedance Balanced)

• Nominal level approx 0dBu
• Located between SS preamp stage and tube/output stage
• Tip=Send: 50 ohms output impedance
• Ring=Return: 7500 ohms input impedance