YBA 2 ALPHA

Used. In good condition. Shows some signs of wear. Supplied with original packaging.

Solid-state stereo power amplifier designed around a circuit philosophy focused on a simple signal path and separation between the two channels. The dual-mono configuration and power supply, designed in relation to the rated output, contribute to maintaining good channel independence and a drive capability greater than the nominal 70 W rating might suggest.

The circuit uses discrete components and a construction designed to minimize interference between the different sections. The specified 0.02 Ω output impedance and damping factor of 400 at 100 Hz indicate effective load control, while the ability to deliver 140 W per channel into 4 Ω provides a substantial reserve compared with the nominal 70 W per channel into 8 Ω.

From a sonic standpoint, the YBA 2 Alpha is generally associated with a presentation characterized by transparency, naturalness and good articulation, with a well-defined midrange and balanced overall presentation. Its character is not oriented towards an aggressive or excessively analytical sound: the upper frequencies tend to retain detail and precision without becoming particularly harsh, while the low frequencies benefit from the low output impedance and the resulting control over the loudspeaker. Listening impressions of the YBA 2 family also describe a fluid and refined presentation with a certain degree of tonal warmth, while maintaining good transparency and an ability to define the soundstage.

The available power is therefore combined with an approach focused on precision and musicality, offering good dynamic capability and an orderly spatial presentation. The combination of control, fast response and relatively smooth tonal character makes the 2 Alpha suitable for systems requiring a power amplifier capable of maintaining definition and articulation without making the reproduction excessively dry.

Technical specifications:

• Output power: 70 W per channel into 8 Ω
• Output power: 140 W per channel into 4 Ω
• Configuration: stereo dual-mono, discrete components
• Frequency response: 5 Hz – 80 kHz ±3 dB
• Input impedance: 27 kΩ
• Output impedance: 0.02 Ω
• Damping factor: 400 at 100 Hz
• Input sensitivity: 120 mV RMS for 1 W into 8 Ω; 1.1 V RMS at rated power
• Signal-to-noise ratio: 100 dB
• Rise time: 3 μs at 10 kHz
• Dimensions (W × H × D): 430 × 95 × 330 mm
• Weight: 12 kg