I’m assuming you mean Audio Technica ATR55 condenser microphone. Being a condenser you’ll need to supply phantom power. You’ll want an audio mixer with phantom power or a stand alone mic power supply. Then you’ll need appropriate wiring to get into the recorder. You’ll need a MD recorder with line or mic in, and your mixer or mic power supply must supply the correct signal level. There’s a lot to choose from.
You want a real mixer.
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I’m assuming you mean Audio Technica ATR55 condenser microphone. Being a condenser you’ll need to supply phantom power. You’ll want an audio mixer with phantom power or a stand alone mic power supply. Then you’ll need appropriate wiring to get into the recorder. You’ll need a MD recorder with line or mic in, and your mixer or mic power supply must supply the correct signal level. There’s a lot to choose from.