The Marshall Major V is 32Ω at 111.1 dB/mW; the Marshall Monitor II ANC is 32Ω at 96.0 dB/mW. This page covers what they ask of an amplifier, not how they sound.
The Monitor II ANC needs 15.1 dB more than the Major V to reach the same loudness — 2.5 mW against 0.08 mW.
| Specification | Major V | Monitor II ANC |
|---|---|---|
| Impedance | 32 Ω | 32 Ω |
| Sensitivity | 111.1 dB/mW | 96.0 dB/mW |
| Sensitivity (voltage) | 126.0 dB/V | 110.9 dB/V |
| Power for 100 dB | 0.08 mW | 2.5 mW |
| Voltage for 100 dB | 50 mV | 0.28 V |
| Current for 100 dB | 1.6 mA | 8.9 mA |
| Highest source impedance that leaves them alone (one-eighth rule) | 4.00 Ω | 4.00 Ω |
| Sources that reach 100 dB out of 280 | 280 | 280 |
Every source in the database that drives one of them drives the other. On power, the choice between these two changes nothing about what amplifier you need.
17 sources stay below the audible-hiss threshold with the Monitor II ANC but cross it with the Major V (FiiO BTR11, FiiO K11 R2R, Lake People G103-S Mk II, 14 more).
280 of the 280 sources here reach 100 dB on both.
The Monitor II ANC is more demanding than 72% of the 567 non-electrostatic models in this database; the Major V than 11%.
| dB SPL | Major V power | Major V voltage | Monitor II ANC power | Monitor II ANC voltage |
|---|---|---|---|---|
| 80 | 0.8 µW | 5 mV | 0.03 mW | 28 mV |
| 85 | 2.5 µW | 9 mV | 0.08 mW | 50 mV |
| 90 | 7.8 µW | 16 mV | 0.25 mW | 90 mV |
| 95 | 0.02 mW | 28 mV | 0.79 mW | 0.16 V |
| 100 | 0.08 mW | 50 mV | 2.5 mW | 0.28 V |
| 105 | 0.25 mW | 89 mV | 7.9 mW | 0.50 V |
| Source | Price | Headroom, Major V | Headroom, Monitor II ANC | Output impedance | Noise |
|---|---|---|---|---|---|
| JadeAudio JA11 | $20 | 25.9 dB | 10.8 dB | 0.5 Ω | 1.7 µV |
| FiiO KA11 | $29 | 34.1 dB | 19.0 dB | 0.7 Ω | 1.7 µV |
| FiiO BTR13 | $59 | 31.1 dB | 16.0 dB | 0.6 Ω | 1.0 µV |
Of the 280 sources here, 280 reach 100 dB on both. 55 of them also publish an output impedance low enough for both under the one-eighth rule and a noise figure that stays below the audible-hiss threshold with both.
The cheapest of the 55 is the JadeAudio JA11, at $20. It leaves 25.9 dB of headroom on the Major V and 10.8 dB on the Monitor II ANC, its output impedance is 0.5 Ω against a one-eighth limit of 4.00 Ω for both, and its noise figure puts the hiss floor 9 dB and 24 dB below the 20 dB SPL this site treats as the point where a quiet room stops hiding it.
| Model | As printed | Tolerance | Standard |
|---|---|---|---|
| Major V | 20-20,000 Hz | not printed | not printed |
| Monitor II ANC | 20-20,000 Hz | not printed | not printed |
Marshall prints the same thing for both the Major V and the Monitor II ANC: 20-20,000 Hz.
Neither range has a tolerance printed beside it, so the matching numbers say little.
Not a measurement; maker by maker.
Both have a page of their own. In full: Marshall Major V and Marshall Monitor II ANC. Every figure on this page comes from what Marshall published, or is derived from it — what that maker publishes, counted.