オーディオ・音響・アナログレコードのAurorasound（オーロラサウンド）

There are many variation of MM cartridges, but MM input of phono stage amplifiers are fixed 47kohm load impedance, and also load capacitance is fixed. These cases, vintage MM cartridge, monaural MM cartridge and high output level MC cartridge are not good fit to it, sometimes peaky high and rough sound. This MM Expander AFE-10 can adjust appropriate load impedance of resistance and capacitance in order to bring out potential performance of those cartridges.　At 47kΩ, 0pF position, signal is by passed. AFE-10 does not need power supply.

Set up for MM cartridge

Set up for MC cartridge and Step up Trans.

Features, How to use

1. Select appropriate load impedance of resistance and capacitance for MM cartridge in order to bring out its potential performance.

2. This load impedance select is effective for not only MM, VM, MI and IM type cartridges, but also high output level MC cartridges that is connected to MM input.

3. When listen a monaural LP disk by stereo cartridge, Mono. position SW can cancel the vertical vibration and pick up the lateral only. This reduces unnecessary vertical noise signal, then makes strong and very low noise mono sound.

4. In the case of some monaural cartridge, head shell and cable wiring may invite hum noise due to ground loop. GND lift switch will cut the ground loop and reduce the hum noise.  Normal case, do no tuse this function.

5. Load impedance adjust is effective for Step up Transformer of MC cartridge, too.

6. Large size MUTE button is convenient when cartridge down/up to play and change disks.

7. MUTE button is effective to degauss both of Step Up transformer of MC cartridge and MC cartridge same time.　This is passive type degauss, so no damage to cartridge and trans even to use too much time.

8. AFE-10 employs precision and high reliability rotary switch of measurement equipment Use 1% grade TAKMAN metal foil resistors and WIMA film capacitors parts.

9. Those switch contact point and R C parts are inserted between in signal line and ground, not inserted in signal line, so no sound degradation.

10. At 47kΩ, +0pF position, input signal is by passed to go output.

Note :
1. To obtain correct number of resistance, please connect to MM input of phono stage amplifier that load impedance is 47kohm.

2. Do not care about capacitance number of phono stage amplifier.
This MM Expander just adds capacitance value of indicated.

3. Resistance and capacitance value will be affected by residential RC value of connection cable. Recommend to use low capacitance cable., and just select your favorite sound by your listening perception.