I have a JOYO ZOMBIE (DUAL RECTIFIER) BanTamp Amp Head 20 Watt Preamp with Bluetooth for sale.
eBay
Therefore, JOYO have launched the BADASS for bassist! JOYO Bass Mini Amp Head 50 Watt Preamp Hybrid Tube Power Amplifier Head with 3 Band EQ & Bluetooth (No Sound,Need Extra Speaker) Badass. Mini amp head of JOYO BanTamp series are easy to use and portable for outdoor performance.
eBay
The JOYO MA-10E is a portable electric guitar amplifier with a power of 10 watts. It features both overdrive and clean channels, making it versatile for different playing styles. The amplifier is designed for use with electric guitars and is suitable for practice sessions. The model is MA-10E from the Joyo MA-10 product line, made in China with solid-state amplifier technology.
eBay