About the Denon AVR-X3900H
The AVR-X3900H sits in the middle of Denon's enthusiast X-Series receiver lineup, built around a discrete Class AB amplifier section with high-current power transistors rather than an integrated amp chip. Denon rates its 9 channels at 105 watts each into 8 ohms, and backs that up with its 70% Power Guarantee: even with five channels driving simultaneously, the receiver still delivers at least 70% of its rated output to each one, so dialogue, effects, and dynamics stay balanced as a system grows from stereo into full surround.
All six HDMI inputs and both outputs support the full HDMI 2.1 spec, including 8K/60Hz and 4K/120Hz pass-through, HDCP 2.3, and wide color gamut support (to actually see 8K/60Hz or 4K/120Hz, the receiver's "4K/8K Signal Format" menu needs to be set to "8K Enhanced" first). Audyssey room correction is built in for automatic speaker calibration, with Dirac Live available as an optional upgrade.
On the connectivity side, built-in dual-band Wi-Fi and Ethernet cover HEOS multi-room streaming, Apple AirPlay 2, and Roon, while two-way Bluetooth 5.4 lets it both receive audio from a phone and transmit to Bluetooth headphones for private listening. A built-in phono input rounds it out for listeners who also spin vinyl.
Product Highlights
- 9.4-channel discrete Class AB amplifier, 105 watts per channel into 8 ohms
- Denon's 70% Power Guarantee keeps output balanced with 5 channels driving at once
- Full HDMI 2.1 spec on all 6 inputs and both outputs: 8K/60Hz, 4K/120Hz, VRR, and ALLM
- Dolby Atmos and DTS:X decoding with Dolby Atmos Height Virtualization
- Audyssey room correction built in; Dirac Live available as an optional upgrade
- Built-in phono input for a turntable
- HEOS multi-room streaming, Apple AirPlay 2, and Roon Ready certification
- Two-way Bluetooth 5.4: receive audio from a phone or transmit to Bluetooth headphones
- Dual-band Wi-Fi and Ethernet network connectivity
- 11.4-channel preamp outputs for future system expansion
What's in the Box
- Denon AVR-X3900H AV receiver
- 6' AC power cord
- Remote control (RC-1252)
- 2 "AAA" batteries
- Sound calibration microphone
- 2 WiFi/Bluetooth antennas
- FM wire antenna
- AM loop antenna
- Cardboard microphone stand
- Quick Start Guide
- Warranty information
- Safety instructions
Frequently Asked Questions
Q: How many channels does the AVR-X3900H drive at once?
A: It's a 9.4-channel receiver rated at 105 watts per channel into 8 ohms, with Denon's 70% Power Guarantee ensuring balanced output even with 5 channels driving simultaneously for a full Dolby Atmos setup.
Q: Does the AVR-X3900H include automatic room correction?
A: Yes, Audyssey room correction is built in and handles speaker calibration automatically. Dirac Live is available as an optional paid upgrade.
Q: Can I stream music from my phone to the AVR-X3900H, or send its audio to headphones?
A: Both. Its two-way Bluetooth 5.4 works in Receiver mode to stream from a phone or tablet, and in Transmitter mode to send the receiver's audio out to Bluetooth headphones for private listening.
Q: Does it support 4K/120Hz for gaming?
A: Yes, all six HDMI inputs and both outputs support the full HDMI 2.1 spec including 4K/120Hz and VRR, though the receiver's "4K/8K Signal Format" menu setting needs to be set to "8K Enhanced" first.
Q: What's a good step-up receiver if I outgrow the AVR-X3900H?
A: The AVR-A10H moves up to 13.4 channels and Denon's Japan-built A-Series construction for a larger Atmos system.
