Musical Paradise MP-301 MK4 Deluxe 6L6 EL34 KT88 Single Ended Class-A Tube Power Amplifier Headphone 6.5WX2

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15 Years of Refinement! From the First Generation to the MK4, Every Evolution Pursues Richer Sound

Since the debut of the first MP-301 in 2008, three generations of continuous improvement have laid the foundation. On September 20, 2025, the 4th-generation MP-301 MK4 finally arrives! Featuring 9 core upgrades and audiophile-grade components, it elevates the signature "warm, natural Class A sound" to a new level of delicacy and engagement. Whether driving speakers or serving as a headphone amp, it lets you rediscover the true essence of music.

1.Full Aluminum Alloy Chassis – Enhances anti-interference performance while the matte finish adds a touch of elegance to your listening room. Not just an amplifier, but an "acoustic work of art" that excels in both aesthetics and sound.

2.Upgraded EI-Type Transformer – Moving away from toroidal designs, the EI structure delivers a warmer, more natural timbre. Vocals and classical music gain immersive detail, revealing a smoother, more charming sound.

3.High-Power Layered Output Transformer – Meticulously wound in multiple sections to extend frequency response, enabling deeper bass, smoother treble, and a wider, more expansive soundstage.

4.Large-Inductor Filter Choke – Supplies stable, ultra-clean power for reduced background noise. Even with soft late-night listening, it’s quiet enough to hear your own breathing.

5.Power Boost to 10W per Channel – With KT88/6550/KT120 tubes, output rises by 3.5W over the previous generation. Drives speakers like the Dali Menuet or KEF LS series with ease and greater dynamic headroom.

6.Full DC Linear-Regulated Filaments – Balanced layout minimizes background noise to near inaudibility, eliminating AC hum that disrupts listening sessions.

7.Comprehensive Circuit Optimization – Produces a richer, more refined sound with seamless transitions across the frequency spectrum. Even familiar old tracks reveal hidden nuances.

8.Gold-Plated RCA & Speaker Terminals – Reduce signal loss, ensure smooth connectivity, and resist oxidation—preserving consistent sound quality over years of use.

9.High-Precision Fast Blown Fuse – Provides instant protection during overcurrent or short circuits of defective power tubes, safeguarding transformers and components.

Hi-Fi Technology

Single-Ended Class A + No Global Negative Feedback – Preserves the purest tube sound without complex feedback circuits, creating a vivid, lifelike presentation.

Self-Biasing for Plug-and-Play Operation – No bias adjustment needed! Swap in 6L6, EL34, KT120, and more—just plug and enjoy. Perfect for beginners with zero risk of incorrect bias setup.

Top-Tier Audiophile Components – Transformers and chokes use imported Z11 grade silicon steel cores. Capacitors come from Nichicon, Rubycon, and Philips BC; resistors from Vishay Dale (U.S. military grade); potentiometers from ALPS (Japan). These parts outperform many premium competitors’ products, ensuring uncompromising sound quality.

High Quality Headphone Amp Performance — Perfect for High- and Mid-Impedance Headphones.

The MP-301 MK4 isn’t just a speaker amplifier—it’s a "$2K-class headphone amp"! The headphone output also passes through tubes and output transformers, inheriting the same sonic character as the speaker output:

Class A output power: 2W at 32Ω / 1.2W at 55Ω / 250mW at 300Ω / 120mW at 600Ω. Easily drives headphones like the AKG 701, Sennheiser HD800, Beyerdynamic DT990 pro, and HIFIMAN HE6 to their full potential.
Vocals feel as if the singer is right beside you, while classical works unfold with remarkable instrument separation. No need to invest in a separate headphone amp!

Details：Output Power
Supported Tubes：10W (KT88/6550/KT120); 6.5W (6L6/EL34, etc.)
Preamp: 6J8P, 6*8, 6SJ7, 717A, 6SH7, EF86 (with adapter)
Power: KT88/6550/KT120, 6L6/EL34/KT77/KT66 (switchable)
Frequency Response：20Hz–25kHz
THD (open-loop, no NFB)＜1%
SNR：90dB
Dimensions/Weight：25×30×20cm / 13kg

âœÂ¨ Matching Guide — Pair with Confidence

Compatible with a wide range of speakers, but not limited to the followings:

Musical Paradise MP-S1, Dali Menuet
KEF Q/LS Series, Harbeth P3
JBL 43/44 Monitor Series, Focal 7 Series. Triangle Borea/Titus/Comète
B&W 6/7 Series, Q Acoustics (UK)