● Live Data
Sennheiser · HiFi Headphones
Sennheiser HD 400U
£77.90
Buy
1 stores trackedBuy Signal
Favorable conditions for purchase
Confidence: 61/100
RSI (14)
—
Need 15+ data points
Volatility (ann.)
—
Need more data
30d Momentum
—
Need 30+ data points
Price Position
0%
Near 90d Low 🟢
EMA 20
—
EMA 50
—
Need 50+ data points
90d Low / High
£78
High: £78.90
30d Forecast
—
→ Stable
◈ AI Recommendation EngineRule-based · v1
Buy
Favorable conditions for purchase
Confidence: 61%
Reasons to Buy
✓Slightly below 90-day historical average (0.8%)
✓Near 90-day low — historically optimal entry point
✓Detailed product specifications available — transparent product information
Risks / Watch Out
✗Only 1 store carrying this product — limited price competition
Product Fundamentals
- Sennheiser HD 400U
- Headphones
- Circumaural
- Closed-back design
- Dynamic
- Foldable
- Frequency range: 18 Hz - 20,000 Hz
- Impedance: 18 Ohm
- Max. sound pressure level: 120 dB SPL @ 1 kHz
- 1 V RMS
- Total harmonic distortion at 1kHz: < 0.5 %
- 32 mm driver
- 1.4 m cable with USB-C connector
- 1-button remote control and microphone
- Single-sided cable routing
- Weight: 217 g
- Colour: Black
- Includes cable and transport pouch
◉ From Our Partner Storescached 1h
Signature Sound and Simplicity - Sennheiser
Sennheiser· 98d ago
Sennheiser HD 400U Review: Best Budget USB-C Headphones in 2026? - Major HiFi
Major HiFi· 12d ago
These $99 Sennheiser wired headphones deliver impressive sound - Macworld
Macworld· 52d ago
Two new pairs of Sennheiser wired headphones, one simple update - What Hi-Fi?
What Hi-Fi?· 97d ago
Sennheiser HD 400U review: Refined German sound for under $100 - Tom's Guide
Tom's Guide· 59d ago
GearDeals Intelligence · Data from 3 historical price points · Analysis is informational only, not financial advice