Icon Audio
Icon Audio Stereo 40 Mk IV Signature
Best tube amplifier for discerning audiophiles seeking exceptional sound.
Experience the Icon Audio Stereo 40 Mk IV Signature, a hand-built British tube amplifier that masterfully combines classic valve warmth with modern reliability. Its quartet of KT88 output tubes delivers a rich, dynamic, and musical soundstage, characterized by an open presentation, a full midrange, and smooth, extended treble. The Signature edition enhances resolution and transparency through upgraded components and meticulous tuning, preserving the emotional depth tube audio enthusiasts cherish. This amplifier offers a commanding sense of scale and control, making it ideal for extended listening sessions and rediscovering your music collection.
$3469.00
More Stereo 40 Options
Owner Satisfaction
4.7
/ 5
Category Rank
551
/ 2553
#551 in Power Amplifiers
Price vs Category Average
-58%
Below average
Build Quality
Hand-built in the UK
/ Hand-built in the UK
Who it's for
- Music enthusiasts seeking an immersive and emotionally resonant listening experience.
- Audiophiles who value meticulous craftsmanship and timeless, elegant audio equipment.
- Listeners with diverse speaker collections or those planning future upgrades.
Who should skip it
- Users preferring a set-and-forget system without component upkeep.
- Individuals with limited space or those sensitive to ambient room temperature.
- Budget-conscious buyers or those new to high-fidelity audio equipment.
Performance breakdown
Sonic Warmth
KT88 tubes deliver that quintessential, rich harmonic texture audiophiles crave.
Build Integrity
Meticulous British hand-craftsmanship ensures long-term reliability and structural excellence.
Soundstage Depth
Provides an expansive, open presentation that breathes life into complex recordings.
Component Resolution
Signature upgrades offer impressive transparency without sacrificing the classic tube character.
Dynamic Control
Maintains a commanding sense of scale even during demanding musical passages.
Ease of Integration
Straightforward RCA connectivity makes it a seamless addition to high-end systems.
Key Specs
Build Quality
Hand-built in the UK
Output Tubes
KT88
Includes
Remote and 4 Linlai E6SN7 tubes
Input Connection Type
RCA
Minimum Frequency Response
20 Hz
Application Type
Stereo
Amplifier Class
Class A
Height
0.0 inches
Features
- Classic valve warmth with modern refinement
- Hand-built in the UK
- Rich, dynamic, and musical sound
- Open and inviting soundstage
- Smooth and extended treble
- Elevated resolution and transparency
- Sense of scale and control
What customers say
Customers consistently praise the exceptional sound quality and robust build of this amplifier. Many highlight its ability to deliver a rich, warm, and detailed audio experience, transforming their listening sessions. The craftsmanship and aesthetic design also receive high marks, contributing to a premium feel. While an investment, users frequently commend its outstanding value, noting it competes favorably with far more expensive high fidelity equipment. This amplifier is celebrated for bringing a truly immersive and engaging musical presentation to discerning audiophiles.
Know before you buy
The KT88 tubes provide a powerful, dynamic sound with a rich midrange and a smooth, extended treble. They are known for offering a commanding sense of scale and authority, making them ideal for listeners who want both warmth and high-resolution detail.
Yes, the Signature edition features upgraded internal components and meticulous tuning designed to improve overall resolution and transparency. These refinements allow for a more open and revealing soundstage while maintaining the classic musicality of the Icon Audio design.
Absolutely. The Stereo 40 Mk IV Signature is designed for extended listening, offering a fatigue-free, inviting presentation that makes it easy to enjoy your music collection for hours at a time.
The amplifier comes with a remote control for convenient volume adjustment and a set of four Linlai E6SN7 tubes. It is ready to integrate into your existing system via standard RCA input connections.
Yes, every unit is hand-built in the United Kingdom. This artisanal approach ensures high build quality and allows for the precise component selection required for the Signature series.
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$3469