The Rolls MP507 Tube Microphone Preamplifier is a single channel preamp that utilizes a single 12ax7 vacuum tube. It has a MU-Metal audio transformer to decrease noise and enhance the sound quality of the XLR input. The design of the MP507 utilizes a high speed self regulated switching power supply to generate 230V of clean usable plate voltage for the 12ax7 vacuum tube. The result is a clean and powerful sounding tube preamp.
| Input Impedance | XLR: 600 Ω (Transformer balanced)--- 1/4”: 1m Ω |
|---|---|
| Output Impedance | XLR: 100 Ω --- 1/4”:100 ΩTHD: .15% |
| THD | .15% |
| S/N Ratio | >110 dB |
| Maximum Input Level | -30 dB mic +4 line XLR, -10 dB 1/4” |
| Maximum Output Level | +16 dB XLR, +10 dB 1/4”Pad: - 37 dB |
| Pad | -37 dB |
| Frequency Response | 20 - 25kHz +/-3 dB |
| Power | 15 VDC |
| AC Power Req | 100-240VAC |
| Dimensions(H x W x D) | 3” (7.62 cm) x 5.5” (13.97 cm) x 6” (15.24 cm) |
| Weight | 1.6 lbs. |
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
Usually arrives in 5-9 business days.
