This item is usually Drop Shipped from the MFR/Distributor within 7-10 business days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable and non-returnable.
International Orders*The Whirlwind LMPRE Microphone Preamplifier adds up to 70dB of gain to one microphone channel. Its compact design makes it an extremely portable and efficient choice to keep in your audio toolbox.
The LMPRE has a balanced XLR input with switchable phantom power. Its initial gain stage is followed by a built-in equalizer, with a low band at 250Hz and high band at 4kHz. These fixed bands are mainly intended to maximize intelligibility; they can be cut or boosted by approximately 6dB.
A rare feature in an affordable preamp, the LMPRE includes an onboard peak limiter with LED metering. The activity of the limiter is governed entirely by the input level, which makes it free to function like an effect rather than simply an output protector.
The LMPRE has balanced XLR and mono-summed RCA outputs for connection to just about any audio amplification system. The 3-level LED output metering allows you to carefully monitor signal strength.
The Whirlwind LMPRE is an excellent choice for adding a high-quality mic input to any audio system.
| Input | |
|---|---|
| Input Connectors | Balanced XLR x1 |
| Input Gain | 10 - 49 dB |
| Input Impedance | 20,000 Ohm differential |
| Maximum Input Level | +4 dBV |
| Phantom Power | +23.7 VDC |
| Output | |
|---|---|
| Output Connectors |
Balanced XLR x1 Mono-summed RCA pair x1 |
| Output Impedance |
XLR: 95 Ohms RCA pair: 1,600 Ohms |
| Output Gain | +/-15 dB |
| Maximum Output Level | +23 dBV |
| Performance | |
|---|---|
| Frequency Response |
@50 dB gain (not limiting): 20 - 10,000 Hz +/-1 dBV; -2.5 dB @ 20,000 Hz @40 dB gain (limiting): 20 - 20,000 Hz |
| Total Gain | 70 dB; 83 dB with bass and treble controls at max |
| Equivalent Input Noise | -115 dBV |
| Noise | At unity gain: -104 dBV |
| THD + N |
@50 dB gain (not limiting): +/-0.1%, 20 - 20,000 Hz @40 dB gain (limiting): +/-0.1%, 100 - 20,000 Hz; +/-1.5% 20 - 50 Hz Limiting: @ threshold < 0.05%; limiting < 0.11% |
| CMR | 80 dB @ 60 Hz |
| General | |
|---|---|
| Power Consumption | Typically 62mA @ 24 VDC |
| Power Requirements | 24 V, 200 mA, unregulated; 2.1mm-center positive |
| Fuse | Automatic reset internal fuse; 100 mA |
| Dimensions (H x W x D) | 1.6 x 5.7 x 2.8" (4.06 x 14.48 x 7.11 cm) |
| Weight |
0.7 lbs (0.32 kg) 1.1 lbs (0.5 kg) with power supply |