Ubiqaudiolab Unveils Ubicube Power Amplifier Range and Ubiquitous 300B Tube Preamplifier
25.10.2026 12:03 | ~2 min read
Slovenian audio manufacturer Ubiqaudiolab, established in 2021, has announced its new Ubicube family of power amplifiers designed for high-end audio systems. The range comprises three models: the Ubicube 700, Ubicube 400, and Ubicube 200. Alongside these amplifiers, the company has introduced the Ubiquitous 300B tube preamplifier. The new products combine innovative circuit designs, substantial enclosures, and engineering solutions aimed at delivering the most accurate possible music reproduction.
The flagship Ubiqaudiolab Ubicube 700 delivers 700 watts of output power into an 8-ohm load. The amplifier combines a Class A input stage with a high-bias Class AB output stage. This configuration is designed to achieve high signal linearity, preserve dynamic range, and provide sufficient power reserves to drive demanding loudspeaker loads.
The Ubicube 700 features an advanced cooling system designed to ensure efficient heat dissipation from its power components. Massive copper plates and natural convection based on the chimney effect are used to transfer heat away from the amplifier modules. The electronic components are housed in a solid aluminum monocoque chassis that provides exceptional mechanical rigidity. This construction also helps minimize the effects of vibration on the internal circuitry.
The two other models in the series offer lower output power. The Ubiqaudiolab Ubicube 400 delivers 400 watts into 8 ohms, while the Ubicube 200 is rated at 200 watts under the same conditions. These amplifiers allow users to select the most suitable solution according to their loudspeakers' characteristics and power requirements.
Completing the lineup is the Ubiquitous 300B preamplifier, which employs the renowned 300B directly heated vacuum triodes. The unit has been developed to work alongside the company's power amplifiers in high-end stereo systems. The new components made their public debut at the Warsaw Audio Video Show 2026 in Warsaw. Recommended retail pricing has yet to be announced.
Specifications
Model name
Ubicube 700
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
167 000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
700
Output power (4Ω) (W)
1200
Gain (dBu)
27.75
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
500 000
Signal to Noise Ratio (dB)
>110
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
<0.01
Max power consumption (W)
N/A
Damping factor
>500
Dimensions (mm)
432 × 432 × 420
Weight (kg)
101
Official link
Specifications
Model name
Ubicube 400
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
167 000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
400
Output power (4Ω) (W)
700
Gain (dBu)
27.75
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
500 000
Signal to Noise Ratio (dB)
>110
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
<0.01
Max power consumption (W)
N/A
Damping factor
>500
Dimensions (mm)
333 × 333 × 318
Weight (kg)
47
Official link
Specifications
Model name
Ubicube 200
Input sensitivity (mV)
N/A
Input impedance (balanced) (Ω)
167 000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
N/A
Output impedance (single-ended) (Ω)
N/A
Max current (A)
N/A
Output power (8Ω) (W)
200
Output power (4Ω) (W)
350
Gain (dBu)
27.75
Frequency response low +/- 3dB (Hz)
N/A
Frequency response high +/- 3dB (Hz)
500 000
Signal to Noise Ratio (dB)
>110
Total Harmonic Distortion + Noise (0% global feedback) (%)
N/A
Total Harmonic Distortion + Noise (100% global feedback) (%)
<0.01
Max power consumption (W)
N/A
Damping factor
>500
Dimensions (mm)
277 × 277 × 265
Weight (kg)
28
Official link
Specifications
Model name
Ubiquitous 300B
Analog inputs (balanced)
5
Analog inputs (single-ended)
N/A
Analog outputs (balanced)
3
Analog outputs (single-ended)
N/A
Gain (dBu)
N/A
Input sensitivity (mV)
N/A
Output voltage (V)
N/A
Input impedance (balanced) (Ω)
200 000
Input impedance (single-ended) (Ω)
N/A
Output impedance (balanced) (Ω)
0.01
Output impedance (single-ended) (Ω)
N/A
Maximum output level (balanced) (dBu)
N/A
Maximum output level (single-ended) (dBu)
N/A
Volume control range (dBu)
N/A
Frequency response low +/- 3dB (Hz)
1
Frequency response high +/- 3dB (Hz)
1 000 000
Signal to Noise Ratio (SNR, unweighted) (dB)
>110
Total Harmonic Distortion + Noise (THD+N) (%)
N/A
Dimensions (mm)
480 x 490 x 153
Weight (kg)
29
Official link
