HB-MA2
Transformer Coupled Dual Microphone Amplifier
The HB-MA2 is a dual channel professional studio microphone stage with Low Frequency Filter. Perfect for studio recording in direct to tape or hard disk recorder, the audio quality surpasses that found in most professional mixing consoles.
Each microphone XLRF input is LUNDAHL transformer coupled for better CMRR and offer total Isolation. The input features switchable 48V Phantom Power and Input Gain control. A balanced, line-level XLRM output with -60dB attenuator provided for each Channel.
EASY OPERATION
The front panel is laid out clearly with Phantom Power LED indicators and corresponding LED's that indicate signal content of both channel. The inputs level are adjustable using rotary control and low frequency filter switches on the front panel.
The rear panel is equipped with a XLRF input connector and a XLRM output connector of each channel. There are -60dB attenuate switch for special purpose and Phantom Power switch of both channels.
FEATURES
- Dual Microphone stage can be used of stereo recording.
- Provided switchable +48V Phantom Power for condenser microphone with LED indicators.
- RFI Filters on all inputs. EMC-proof case significantly improves rejection of radio frequency interference.
- Input level gain and Output attenuate switch control.
- Switchable Low Frequency Filter to remove mic bumps and rumble.
- LED indicators show signal contented of each microphone input feed.
- Switchable power supply (110V~120V or 220V~240V).
- IEC-AC power receptacle.
- Standard 19" 1U welded steel chassis.
SPECIFICATIONS
| Audio Specifications | ||
| Frequency Response | +0dB/-0.5dB 20Hz~20kHz | |
| Input Impedance | 1.2kΩ Balanced | |
| Maximum Input Level | +3.5dBu (Refered to Min Gain) | |
| -33dBu (Refered to Max Gain) | ||
| Balanced Input, at 1kHz | 80dB Typically | |
| Output Gain Adjustable Range | +22dB~+60dB | |
| Output Impedance | 20Ω Balanced | |
| Maximum Output Level | +27dBu | |
| Output Noise (A-wtd, rms) | -90dB (Refered to Min Gain) | |
| -65dB (Refered to Max Gain) | ||
| THD + Noise | 0.005% @ 1kHz at +24dBm (Min Gain) | |
| 0.02% @ 1kHz at +24dBm (Max Gain) | ||
| Low Frequency Roll-off | 120 @ 6dB/octave | |
| Phantom Power | +48V (Switchable) | |
| Output Attennate | -60dB (Switchable) | |
| Connections | ||
| Microphone Input | 2 × XLRF (Balanced w/+48V Phantom) | |
| Main Output | 2 × XLRM (Balanced Condition Only) | |
| Power Requirement | IEC, 110~120V or 220~240V | |
| Physical Specifications | ||
| Dimensions | W482 × H44 × D230 (mm) | |
| Nett Weight | 2.5kg |
