Combining the best of classic tube amplification with solid-state power output, the SP-331MK is a stereo power amplifier that can make even the most demanding speakers shine.
Class-A mode takes this amp's performance one step further and enables incredibly pure playback with pristine sound quality.
The SP-331MK boasts fantastic sound quality and power output thanks to the relationship between its vacuum tubes and solid-state transistors. Hear why this is one of the best sounding power amplifiers in its price range.
- An evolution of the popular SP-331
- Hybrid Tube & Solid State Amplification
- Class A Operation (up to 10 watts @ 8 Ohms)
- 2 x 150 Watt Power Output 8 Ohms
- Superior Power Reserves.
- 4 x High-Quality Speaker Binding Posts per channel
- Beautiful Sound & Deep Basses
User Manual (PDF, 3MB)
The SP-331MK is an enhancement of the power amplifier SP-331, which upgrades it by higher quality inputs at the rear and dual speaker outputs, which can be switched on and off individually. Featuring an additional vacuum tube over the former model, the SP-331MK perfects the hybrid valve/solid-state amplification method. One of the most popular features of the SP-331MK is the revered "Class A Mode", which offers an exceptional "no compromise" sonic performance.
The SP-331MK can be operated in Class A mode. Outputting 10W of power per channel in this mode, it has a crystal clear sonic characteristic and completely eliminates harmonic distortions. This mode is enabled by the large storage condenser batteries which provide sufficient power reserves. This allows the Class A circuitry of the unit to provide a faithful deep bass and clean, airy trebles.
Beyond 10W the amplifier switches to Class AB mode, which offers a lot more power, but is a little less controlled.
The SP-331MK, with its hybrid design, combines the advantages of both vacuum tube and transistor amplification. Valve amplification provides the classic warm tone that audio enthusiasts crave. Combined with transistor solid-state technology, the result is a power amp that is efficient in terms of power consumption, and in sound is timelessly rich. This is a main amplifier with little competition and one that never loses control when working with even the most demanding of loads.
Featured in the SP-331MK are two 6N16 tubes and a large 12AU7 tube for its 'Class A' output. This combines with twelve Toshiba output transistors per channel give this main amplifier all the power and grace you need in your high-end system.
A power amplifier that meets modern AV needs musty be powerful yet delicate. Capable of reproducing everything from airy voice and acoustic instruments to the strength and punch of a huge musical piece. Hear the warm, inviting tones across all dynamic levels.
The SP-331MK boasts a power delivery of 150 watts per channel at 8 ohms, and a huge 300 watts per channel at 4 ohms. This means that even with the most demanding of Hi-Fi speakers, this power amp can not only handle it, but will bring out your speakers' potential. Whether you're playing dynamic orchestral arrangements, explosive film soundtracks or listening to music on CD or record, the SP-331 is the powerhouse your system deserves.
With its hybrid construction of valves and transistors, the SP-331MK has a lot going on under the hood. However, with your system's visual aesthetic in mind, the exterior of this unit is sleek and minimal.
A stereo preamplifier, such as Vincent's SA-31 or SA-31MK (shown left) is the perfect match for the SP-331MK. Combine this unit with the CD players, tuners and other components from their product range, you can build the most diverse, perfectly harmonious sound system.
What's in the Box?
- 1x SP-331MK Unit
- 1x Power Cable
- User Manual
Vincent is a German brand and manufacturer of Class-A Hi-Fi equipment. SInce 1995, Vincent has stood for continual development to 2-channel stereo in the high-end class.
Frequency response:10 Hz - 50 kHz +/- 0.5 dB
Nominal Output Power RMS/8 Ohm: 2 x 150 Watt, RMS/4 Ohm: 2 x 300 Watt
Total harmonic distortion: < 0.1 % (1 kHz, 1 Watt)
Inputs: 2 x Stereo RCA