KR Audio Kronzilla SD
Best ultimate amplifier for discerning audiophiles seeking unparalleled sound.
The KR Audio Kronzilla SD is a stereo tube amplifier that delivers 35 watts per channel in pure Class A, single-ended operation with zero feedback. It utilizes two T1610 output tubes for its impressive sound. This amplifier offers a frequency response of 20Hz - 20kHz (-3dB) and supports 4 or 8 Ohm speaker impedances. With its substantial build and high-quality components, the Kronzilla SD is designed for audiophiles seeking exceptional tube amplification.
$21000.00
Owner Satisfaction
4.8
/ 5
Category Rank
37
/ 1719
#37 in Power Amplifiers
Price vs Category Average
+154%
Above average
Description
single-ended tube amplifier - pure class A, zero feedback
/ single-ended tube amplifier - pure class A, zero feedback
Who it's for
- Audiophiles seeking an immersive, lifelike musical experience
- Listeners with inefficient speakers requiring substantial, high-quality amplification
- Discerning collectors who appreciate bespoke, high-performance audio components
Who should skip it
- Budget-conscious consumers or those new to high-end audio
- Users with limited space or those preferring low-maintenance audio systems
- Purists prioritizing absolute sonic neutrality above all else
Performance breakdown
Sonic Purity
Single-ended Class A design delivers unmatched harmonic richness and musical intimacy.
Build Integrity
Massive fifty-kilogram chassis ensures rock-solid stability and vibration-free operation.
Tube Performance
Proprietary T1610 tubes provide exceptional power and signature vacuum tube warmth.
Dynamic Range
Delivers a wide frequency response that captures nuanced detail across the spectrum.
System Compatibility
Selectable impedance settings offer flexible pairing with various high-end speaker loads.
Signal Transparency
Zero feedback architecture preserves the raw, uncolored integrity of the source signal.
Key Specs
Description
single-ended tube amplifier - pure class A, zero feedback
Output Tubes
2x T1610 (Kronzilla)
Output Power
2x 35W RMS (THD = 3%)
Bandwidth
20Hz - 20kHz (-3dB)
Output Impedance
4 / 8 Ohm
Input
1V RMS / 47 kOhms at 35W
Dimensions - w x h x d
38.5 x 41.5 x 55 cm
Weight
Approx. 50 kg
Features
- Pure Class A, Zero Feedback Design
- High Output Power
- Wide Frequency Response
- Selectable Speaker Impedance
- Premium Tube Amplification
What customers say
Audiophiles consistently praise this amplifier for its exceptional sound reproduction and robust, distinctive design. Users frequently highlight its ability to deliver a rich, detailed, and immersive audio experience, often describing it as unparalleled. While acknowledging its premium price point, many consider it a worthwhile investment for its superior performance and craftsmanship, affirming its status as a top tier component for serious listeners.
Know before you buy
A zero feedback design avoids the corrective loops found in many amplifiers, which often results in a more natural, open soundstage and improved transient response. It allows the T1610 tubes to operate with greater sonic purity, though it requires a high-quality source to fully appreciate the transparency.
Yes, the Kronzilla SD is designed to support both 4 and 8 Ohm speaker impedances. You can select the appropriate output to ensure optimal power delivery and compatibility with your specific speaker setup.
This is a substantial piece of equipment measuring 38.5 x 41.5 x 55 cm and weighing approximately 50 kg. Due to its weight and the heat generated by pure Class A tube operation, you should ensure your rack is sturdy and has plenty of open space for ventilation.
The T1610 tubes are known for their ability to combine the warmth and harmonic richness of traditional tube amplification with the power and authority usually reserved for solid-state designs. You can expect a lush, detailed midrange and a very tactile, present sound signature.
While 35 watts may seem modest compared to solid-state amplifiers, the pure Class A, single-ended design provides significant current and drive. It is well-suited for most high-fidelity speakers, though it will perform best with speakers that have moderate to high sensitivity.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$21000