Two-channel Power Amplifier for Radio Cassette Players (No Heat Sink Needed during 9 V Operation) The part LA4598 is manufactured by SANYO. Below are the specifications, descriptions, and features based on the available knowledge:  

### **Specifications:**  
- **Manufacturer:** SANYO  
- **Type:** Audio Power Amplifier IC  
- **Output Power:** 5.8W (typical at 9V, 4Ω, THD=10%)  
- **Supply Voltage Range:** 4.5V to 12V  
- **Package:** SIP (Single In-line Package)  
- **Pin Count:** 10 pins  
- **Operating Temperature Range:** -20°C to +75°C  
- **Total Harmonic Distortion (THD):** 0.3% (typical at 1kHz, 4.5W, 4Ω)  
- **Standby Current:** 0.5mA (typical)  

### **Descriptions and Features:**  
- **Low Quiescent Current:** Designed for efficient power consumption.  
- **Built-in Thermal Protection:** Prevents overheating damage.  
- **Built-in Audio Mute Function:** Allows for muting the audio output.  
- **Single Power Supply Operation:** Simplifies circuit design.  
- **Minimal External Components Required:** Reduces PCB complexity.  
- **Suitable for Portable Audio Devices:** Commonly used in radios, portable speakers, and other small audio applications.  

This information is strictly based on the factual details available about the LA4598 IC from SANYO.

Two-channel Power Amplifier for Radio Cassette Players (No Heat Sink Needed during 9 V Operation)