Lab12 suara Mk2 Toroid Version (KT150) Class A Power Amplifier
Suara is Lab12's parallel single-ended Class A power amplifier, built to bring the simplicity and purity of Class A operation to a genuinely powerful 50 watts per channel with KT150 tubes.
A true dual-mono design uses two separate high-current, low-noise toroidal transformers, and a front-panel switch lets you flip between Triode and Ultra Linear operating modes to taste. Manual bias adjustment is accessible on the back plate, and retro analog Nissei VU meters give a tactile, old-school way to keep an eye on levels.
Key specifications
| Output Power | 50W per channel (KT150) |
| Power Consumption | 350VA max |
| Frequency Response | 20Hz - 25kHz (-0.9dB) |
| Input Impedance | 100k ohm |
| Recommended Speakers | 4-8 ohm |
| Tube Complement | 4x dual triodes, 4x KT150 power pentodes (6550/KT88/KT120 compatible) |
| Input Sensitivity | 1.8V (Triode), 1.5V (Ultra Linear) |
| Inputs | 1x line unbalanced stereo, RCA and XLR |
| Colours | Matt Black, Frozen Silver |
| Dimensions (WxHxD) | 43 x 19 x 29cm |
| Weight | 22kg |
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