The Yamaha DS840 is a professional-grade drum throne known for its stability and comfort. It features a round, heavily padded seat, durable construction, and a secure screw-rod height adjustment system. The DS840 is a heavy-duty model designed for demanding performers and long practice sessions. 
Specifications
- Seat design: Round, heavily padded seat with a diameter of 330mm (13.75 inches).
- Seat material: Black vinyl or synthetic leather with premium foam padding.
- Height adjustment: Screw rod (spindle) system with a locking collar for secure, precise positioning.
- Height range: 460mm to 650mm (about 18 to 25.6 inches).
- Leg design: Three double-braced, wide-stance legs for exceptional stability.
- Seat mount: Large, sturdy cast aluminum.
- Hardware: Chrome-plated.
- Maximum weight limit: 330 pounds
Key features
- Comfortable padding: The thick, padded foam seat offers firm support for extended drumming sessions.
- Heavy-duty build: The double-braced legs and cast aluminum mount make it a durable and stable choice for heavy use.
- Precise height adjustment: The screw rod system allows for fine-tuning your seat height and locking it securely in place.
- Stability: Wide, non-slip rubber feet prevent the throne from moving on any surface.
- Memory lock: Features a memory clamp design for quick, consistent height setup.