KR Audio VA300 Power Amplifier
Best single-ended tube amplifier for audiophiles seeking pure, warm sonic detail.
Experience unparalleled sonic purity with the KR Audio VA320 Power Amplifier. This stereo tube amplifier boasts a single-ended design and Pure Class A topology with zero feedback, delivering 20 Watts RMS per channel. Utilizing high-quality KR output tubes, it offers exceptional warmth and detail for a truly immersive listening experience. Designed for discerning audiophiles, the VA320 is a sophisticated centerpiece for any serious two-channel audio system, providing a wide frequency response and robust build quality.
$4275.00
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1719
#421 in Power Amplifiers
Price vs Category Average
-48%
Below average
Type
Single-ended tube amplifier, Pure Class A, Zero feedback
/ Single-ended tube amplifier, Pure Class A, Zero feedback
Who it's for
- Audiophiles seeking natural, detailed, and warm sonic performance
- Listeners valuing unique power delivery from proprietary tube technology
- Collectors appreciating meticulous hand-built craftsmanship and boutique aesthetics
Who should skip it
- Users with limited ventilation or small, temperature-sensitive listening rooms
- Budget-conscious buyers looking for more accessible high-fidelity options
- Owners wary of long-term maintenance costs for specialized components
Performance breakdown
Sonic Purity
Zero feedback design delivers an exceptionally transparent and natural soundstage.
Build Integrity
Heavyweight construction ensures long-term stability and vibration-free performance.
Tube Warmth
Proprietary KR output tubes provide the signature lush, harmonic richness audiophiles crave.
Power Efficiency
Pure Class A operation prioritizes musicality over raw electrical efficiency.
Speaker Compatibility
Selectable impedance handles diverse speaker loads with refined, steady control.
Dynamic Range
Wide frequency response captures subtle nuances across the entire audible spectrum.
Key Specs
Type
Single-ended tube amplifier, Pure Class A, Zero feedback
Output Tubes
2x KR 842VHD or 300BXL
Output Power
2x 20W RMS (THD = 3%)
Frequency Response
20Hz - 20kHz (-3dB)
Input Sensitivity
1V RMS / 47 kOhms for 20W output
Output Impedance
4 or 8 Ohms selectable
Dimensions (w x h x d)
38.5 x 25.5 x 55 cm
Weight
Approximately 38 kg
Features
- Single-ended tube amplifier design
- Pure Class A operation
- Zero feedback circuit
- High-quality KR output tubes
- 20W RMS per channel output
- Stereo configuration
- Wide frequency response
- Robust build quality
What customers say
The KR Audio VA300 amplifier earns high praise as a reference component, celebrated for its unique sonic signature. Owners consistently note its ability to deliver the rich harmonics of tube gear combined with the speed and control of solid state. Listeners frequently highlight the expansive, three-dimensional soundstage and exceptional detail retrieval that remains musical over long periods. Build quality is universally lauded, reflecting its handcrafted, high-end pedigree. While the significant financial investment and specialized tube replacement costs present barriers, owners express profound satisfaction, viewing the VA300 as a technically superb and emotionally engaging piece of audio engineering that justifies its flagship status.
Know before you buy
Given the 20W RMS output, this amplifier performs best with high-sensitivity speakers. It is ideal for driving efficient floor-standing or bookshelf speakers that do not require massive power to reach their full dynamic range.
The VA320 is specifically designed to utilize KR 842VHD or 300BXL output tubes. These high-quality tubes are integral to the amplifier's signature sound and sonic purity.
The zero feedback circuit preserves the natural harmonic structure of the music, resulting in a more organic and transparent sound. It avoids the phase shifts often introduced by feedback loops, leading to a highly immersive and detailed presentation.
Yes, the VA320 features selectable output impedance for both 4 and 8 Ohms. This ensures optimal power delivery and compatibility with a wide range of high-end loudspeaker designs.
The VA320 is a substantial piece of equipment, weighing approximately 38 kg and measuring 38.5 x 25.5 x 55 cm. You will need a sturdy, well-ventilated rack or stand capable of supporting its significant weight and heat dissipation requirements.
Yes, provided you have a high-quality external DAC with an analog volume control or a dedicated preamplifier. Since the VA320 is a power amplifier with RCA inputs, it requires a line-level signal to function.
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