Willsenton KT88 Tube Integrated Amplifier vs Willsenton R300 Plus Tube Amplifier: Spec Comparison
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You are comparing the willsenton kt88 tube integrated amplifier vs r300 plus tube amplifier to find the right tube amp for your setup. Both units are hand-built vacuum tube amplifiers that function as integrated amps, power amps, and headphone amps. They share a similar footprint and include remote controls. The main difference lies in their output tube technology and amplifier class. One uses versatile KT88 tubes with switching options, while the other employs single-ended Class A 300B tubes for a specific sonic character.
Output Tube Type
KT88 (default), switchable to EL34 or 6550
Two customized 300B tubes
Amplifier Class
Triode or ultra-linear selection
Single-ended pure Class A
Color
Silver
Black piano paint
Weight
57.3 pounds
50.7 pounds
Rectification Tubes
not listed
Two customized 5AR4 vacuum tubes
Choose the first if
- You want to switch between different tube sounds like KT88, EL34, or 6550.
- You prefer the flexibility of triode or ultra-linear modes.
- You like a silver chassis finish.
Choose the second if
- You prefer the specific sound of single-ended Class A amplification.
- You want an amplifier with a black piano paint finish.
- You value a lighter unit at 50.7 pounds.
Verdict
Choose the KT88 model if you want versatility in tube types and amplifier modes. Pick the R300 Plus if you prioritize single-ended Class A performance and a classic black aesthetic. Both are hand-built options that serve multiple roles in your audio chain.
Specs: KT88 vs R300 Plus
Tube configuration
Edge: Willsenton KT88 Tube Integrated Amplifier
The Willsenton KT88 Tube Integrated Amplifier uses KT88 tubes by default, but you can swap them for EL34 or 6550 tubes to change the sound character. A red button on the back lets you switch between these types. The Willsenton R300 Plus Single-Ended Class A Tube Amp uses a fixed configuration with two customized 300B tubes for power amplification. It also uses Tung-Sol 6SL7 GT and 6SN7 tubes in the front stage, plus 5AR4 tubes for rectification. If you want flexibility to try different tube sounds without buying extra sets, the KT88 model offers that choice. The R300 Plus provides a specific single-ended Class A sound with its fixed 300B setup.
Amplifier class
Edge: Willsenton KT88 Tube Integrated Amplifier
The Willsenton KT88 Tube Integrated Amplifier allows you to switch between triode and ultra-linear modes using a button on the amplifier. This gives you two distinct operating classes to choose from depending on your preference. The Willsenton R300 Plus Single-Ended Class A Tube Amp is strictly a single-ended pure Class A integrated amplifier. It does not offer a mode switch for different classes. If you prefer the efficiency and power of ultra-linear operation or the warmth of triode mode, the KT88 gives you that control. The R300 Plus commits entirely to the Class A design, which many audiophiles prefer for its specific tonal qualities, but offers no alternative class.
Physical dimensions
Edge: Tie
The Willsenton KT88 Tube Integrated Amplifier measures 15.4 inches in width, 7.99 inches in height, and 15.7 inches in length. The Willsenton R300 Plus Single-Ended Class A Tube Amp measures 14 inches in width, 7.87 inches in height, and 15.9 inches in length. The R300 Plus is slightly narrower and shorter, which might help if you have a tight shelf space. The KT88 is slightly wider and taller but shorter in depth. Both units have a similar footprint, so either should fit in standard audio racks. You should measure your available space carefully before placing either unit on your shelf.
Weight
Edge: Willsenton R300 Plus Single-Ended Class A Tube Amp
The Willsenton KT88 Tube Integrated Amplifier weighs 57.3 pounds. The Willsenton R300 Plus Single-Ended Class A Tube Amp weighs 50.7 pounds. The KT88 is heavier by about 6.6 pounds. This extra weight often indicates a more substantial chassis or larger transformers, which can reduce vibration. The R300 Plus is lighter, which might make it slightly easier to move if you need to rearrange your equipment. Both units are substantial pieces of gear that require sturdy support. If you have a very strong shelf, the weight difference is negligible. If you are concerned about shelf load, the R300 Plus is the lighter option.
Color options
Edge: Tie
The Willsenton KT88 Tube Integrated Amplifier is available in Silver and Black. The Willsenton R300 Plus Single-Ended Class A Tube Amp features a classic Black piano paint finish, with a Silver Panel option also listed in variations. The KT88 offers a straightforward Silver or Black choice for the entire unit. The R300 Plus emphasizes a black piano finish, which may complement darker furniture better. If you prefer a silver chassis to match silver components, the KT88 is the clear choice. If you want a high-gloss black finish that looks premium, the R300 Plus provides that specific aesthetic. Both offer color choices to match your system.
Which Willsenton tube amp suits you
You want flexible tube swapping for different tones
Our pick: Willsenton KT88 Tube Integrated Amplifier
The KT88 model lets you switch between KT88, EL34, and 6550 tubes using a rear button. This gives you three distinct sound profiles from one unit. You can tailor the audio character to your preference by changing the tubes, offering more versatility than the fixed configuration of the R300 Plus.
You prefer single-ended Class A circuitry
Our pick: Willsenton R300 Plus Single-Ended Class A Tube Amp
The R300 Plus uses a single-ended Class A design with two 300B tubes for power amplification. It also features a 5AR4 rectifier and 6SL7/6SN7 input stages. This specific tube configuration and circuit topology appeal to listeners who prioritize the pure Class A sound signature over the push-pull KT88 design.
You want a classic black piano finish
Our pick: Willsenton R300 Plus Single-Ended Class A Tube Amp
The R300 Plus features a classic black piano paint finish on its body. This aesthetic choice differs from the silver or black options available for the KT88 model. If you prefer a glossy black exterior that matches traditional high-fidelity equipment styling, this amplifier provides that specific visual appeal for your setup.
Willsenton KT88 Tube Integrated Amplifier
Best for: listeners seeking tube flexibility and warm analog sound
- Vacuum Tubes
- KT88 x 4
- Features
- Amplifier, Headphone Output
- Color
- Silver
- Amplifier Type
- Tube
- Dimensions
- 15.7 × 15.4 × 7.99 inches
- Weight
- 57.3 pounds
The Willsenton R8 is a hand-built tube amplifier featuring four KT88 output tubes. It offers flexible configuration options, allowing you to use EL34 or 6550 tubes for different sound profiles. The unit weighs 57.3 pounds and measures 15.7 by 15.4 by 7.99 inches. It functions as an integrated, power, or headphone amplifier. This model suits listeners who value warm, analog sound and want tube flexibility in a single chassis.
- Supports three tube types: KT88, EL34, and 6550
- Functions as integrated, power, or headphone amplifier
- Includes remote control and protective cover
- Features triode and ultra-linear switching
- Heavy 57.3-pound build requires sturdy support
- Requires 100 to 300 hours run-in for optimal sound
- Larger 15.7-inch length may limit tight shelf spaces
- You want to swap between KT88, EL34, and 6550 tubes
- You need a headphone output alongside amplifier functions
- You prefer hand-welded, triode-based tube sound
- You need a lightweight, portable amplifier
- You want immediate optimal sound without run-in
- You prefer solid-state or digital amplification
Verdict: The Willsenton R8 Tube Integrated Amplifier fits audiophiles who prioritize tube flexibility and warm analog tones over compact size and instant readiness. It is ideal for those willing to invest time in run-in and tube swapping for sound customization.
Willsenton R300 Plus Single-Ended Class A Tube Amp
Best for: small rooms seeking pure Class A tube warmth
- Amplifier Class
- Class A
- Vacuum Tubes
- 5AR4 x 2, 6SL7 GT, 6SN7 x 2, 300B x 2
- Features
- Amplifier, Headphone Output
- Color
- Black
- Amplifier Type
- Integrated
- Dimensions
- 15.9 × 14 × 7.87 inches
The Willsenton R300 Plus is a hand-made, single-ended Class A integrated amplifier using two 300B output tubes. It includes a headphone output and a dedicated power amp input. The unit weighs 50.7 pounds and measures 14 by 15.9 inches. You should choose this if you want pure Class A sound with vacuum tube rectification and amplification stages.
- Single-ended Class A design with two 300B tubes
- Integrated amplifier with headphone output and power amp input
- Uses 5AR4 rectifier and 6SL7/6SN7 preamp tubes
- Hand-made point-to-point manual welding construction
- Heavier build at 50.7 pounds compared to typical solid-state units
- Larger footprint with a 15.9-inch length and 14-inch width
- Single-ended Class A operation limits maximum power output
- You want single-ended Class A sound from 300B tubes
- You need a headphone output and power amp input
- You prefer hand-made point-to-point construction
- You need high power output for large rooms
- You prefer solid-state amplification over vacuum tubes
- You want a lightweight or compact amplifier
Verdict: Willsenton R300 Plus Single-Ended Class A Tube Amp suits listeners who prioritize pure Class A tone and vacuum tube warmth over raw power or compact size. It is ideal for small to medium listening spaces where sonic purity matters more than volume.
Specifications side by side
| Spec | Willsenton KT88 Tube Integrated Amplifier | Willsenton R300 Plus Single-Ended Class A Tube Amp |
|---|---|---|
| Amplifier Class | – | Class A |
| Vacuum Tubes | KT88 x 4 | 5AR4 x 2, 6SL7 GT, 6SN7 x 2, 300B x 2 |
| Features | Amplifier, Headphone Output | Amplifier, Headphone Output |
| Color | Silver | Black |
| Amplifier Type | Tube | Integrated |
| Tube | KT88 | – |
| Dimensions | 15.7 × 15.4 × 7.99 inches | 15.9 × 14 × 7.87 inches |
| Weight | 57.3 pounds | 50.7 pounds |
| Model | Willsenton R8 | Willsenton R300 PLUS |
Frequently asked questions
Does the Willsenton KT88 have a headphone output?
Yes, the Willsenton KT88 Tube Integrated Amplifier includes a headphone output. This feature allows you to connect headphones directly to the unit for private listening. It functions as an integrated amp, power amp, and headphone amp, providing flexibility for different listening environments without needing extra equipment.
Is the Willsenton R300 Plus a Class A amplifier?
Yes, the Willsenton R300 Plus is a Single-Ended Class A Tube Amp. This design prioritizes pure Class A tone and vacuum tube warmth. It is ideal for small to medium listening spaces where sonic purity matters more than raw volume or power output.
How much does the Willsenton KT88 weigh?
The Willsenton KT88 Tube Integrated Amplifier weighs 57.3 pounds. Its dimensions are 15.4 inches wide, 7.99 inches high, and 15.7 inches long. The substantial weight reflects its hand-built construction and internal components, which contribute to its stable performance and warm analog sound character.
What color is the Willsenton R300 Plus?
The Willsenton R300 Plus Single-Ended Class A Tube Amp comes in black. Its physical footprint is 14 inches wide, 7.87 inches high, and 15.9 inches long. It weighs 50.7 pounds, making it slightly lighter and narrower than the KT88 model for your setup planning.
Can I swap tubes in the Willsenton KT88?
Yes, you can swap tubes in the Willsenton KT88. It uses KT88 tubes by default, but a red button on the back lets you switch between KT88, EL34, or 6550 tubes. This flexibility allows you to change the sound character to suit your preferences.
Which amp is better for small rooms?
The Willsenton R300 Plus is better for small rooms. It is designed for listeners who prioritize pure Class A tone over raw power. Its Single-Ended Class A design delivers warmth suitable for smaller spaces, whereas the KT88 model focuses on flexibility and broader tonal options.
Does the Willsenton R300 Plus have a headphone jack?
Yes, the Willsenton R300 Plus includes a headphone output. Along with its amplifier functions, it serves as a headphone amp. This allows you to use headphones for detailed listening sessions while enjoying the Single-Ended Class A tube warmth in a compact, integrated form factor.
