Quicksilver Audio Mono KT88 Tube Amplifier Monoblocks
Best tube monoblocks for audiophiles seeking powerful, holographic sound.
Experience unparalleled sonic purity and robust power with the Quicksilver Audio KT Mono Amp. These tube monoblocks deliver a formidable 80 watts per channel, effortlessly driving demanding loudspeakers. For even greater output, tube-rolling allows expansion up to 100W. The amplifier maintains a high damping factor and low distortion, ensuring exceptional clarity and holographic soundstaging. The exclusive Aural Walnut Edition adds a touch of elegance with custom walnut faceplates, blending exquisite aesthetics with high-fidelity performance.
$5895.00
Owner Satisfaction
4.8
/ 5
Category Rank
167
/ 1685
#167 in Power Amplifiers
Price vs Category Average
-29%
Below average
Type
Tube amplifier
/ Tube amplifier
Who it's for
- Owners of demanding speakers requiring robust power delivery
- Audiophiles seeking classic warmth and immersive soundstage depth
- Listeners valuing long-term reliability and simple, repairable circuitry
Who should skip it
- Design-focused listeners wanting modern, high-end visual aesthetics
- Users with limited space or poor room ventilation
- Budget-conscious buyers wary of recurring maintenance expenses
Performance breakdown
Power Delivery
Effortlessly drives demanding speakers with robust, clean tube-driven wattage.
Sonic Transparency
Delivers exceptional clarity and a holographic soundstage for immersive listening.
Tube Flexibility
Easily swap tubes to push output up to 100 watts.
Build Integrity
Handcrafted construction ensures long-term reliability and a premium aesthetic feel.
Signal Fidelity
Maintains low harmonic distortion even when pushed to higher volume levels.
Aesthetic Appeal
The walnut faceplate option provides a sophisticated, timeless look for audio racks.
Key Specs
Type
Tube amplifier
Power Output
80 watts into 4 or 8Ω (KT88), up to 100W with KT150 tubes
Tube Complement
2x KT88, 1x 12AX7, 1x 12BH7
Frequency Response
14 Hz to 70 KHz
Total Harmonic Distortion
< 0.5% at 80 watts
Dimensions
6"H x 9.25"W x 14.5"D
Weight
40 lbs. each
Input Impedance
100 Kohm
Features
- Powerful 80W per channel tube monoblocks
- Tube-rolling flexibility up to 100W
- Exceptional sonic purity and clarity
- High damping factor and low distortion
- Exclusive Aural Walnut Edition available
- Drives demanding loudspeakers effectively
- Handcrafted build quality
- Holographic soundstaging
What customers say
The Quicksilver KT88 Monoblocks are highly regarded for delivering exceptional value in tube amplification. Owners consistently praise the sonic purity and musicality, noting a detailed yet non-fatiguing sound signature. A key strength is the superb control these units maintain over bass frequencies, even with difficult speakers. The build quality is robust and reliable, reflecting a focus on longevity over unnecessary styling. Many users find these monoblocks offer performance comparable to much costlier gear, cementing their reputation for outstanding value. The straightforward design also makes maintenance simple, appealing even to those new to tube technology. Overall, owners report high satisfaction with this reliable, high-fidelity amplifier.
Know before you buy
Yes. With 80 watts per channel and a high damping factor, these amplifiers are designed to maintain control over demanding loudspeaker loads, ensuring consistent performance even with complex impedance curves.
The amplifier is designed to support different power tubes, allowing you to upgrade to KT150 tubes to increase the output from 80 watts to 100 watts. This provides flexibility if you decide you need more headroom for your specific room or speaker setup.
The KT88 configuration is known for its robust power and dynamic range. Combined with the 12AX7 and 12BH7 input and driver tubes, these monoblocks deliver a holographic soundstage with exceptional clarity and low distortion.
Yes, these are dedicated power amplifiers. You will need to connect them to a preamplifier or a source component with a volume control via the RCA inputs.
Each monoblock measures 6 inches high, 9.25 inches wide, and 14.5 inches deep. Because they are tube-based, ensure you provide adequate ventilation around the units to allow heat to dissipate properly.
The internal circuitry and performance specifications remain identical between the two. The Aural Walnut Edition features custom walnut faceplates, offering a more refined, furniture-grade aesthetic compared to the standard finish.
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