MBL N21 MKII Stereo Power Amplifier

The MBL N21 MKII is the Noble Line's stereo power amplifier - MKII 2026 refresh with 380 watts per channel into 4 ohms and 25 amp peak output current. Same LASA 2.0 (Linear Analogue Switching Amplifier) technology as the N15 mono power amplifier, in a single stereo chassis form factor. For MBL systems where two monoblocks would be more amplification than needed but the compact Class D efficiency of Noble Line is preferred, the N21 MKII is the natural stereo amp choice.

Symmetrical design for optimum common-mode rejection. Soft Clipping allows gentle transition into overload without the aggressive distortion of hard clipping. LASA 2.0 amplifier technology delivers stable, load-independent current and voltage supply, meaning the N21 MKII maintains its sonic character regardless of the speaker impedance load. Analogue toroidal transformer with Mu-metal protective shielding.

1 pair XLR input plus 1 pair RCA input for source flexibility. At $21,900 in current MBL pricing, the N21 MKII is the natural amplifier for MBL systems built around the 116 F, 120 MKII, or 126 MKII Radialstrahler speakers with a Noble Line preamp (N11) driving. Pairs naturally with the N11 preamplifier for a two-piece Noble Line stereo separates system. Hear it at LMC — walk in during business hours at Scottsdale or Tempe, or book ahead for a prepared listening session.