Tube MP
intermediate
$79
Used market: $65*
Specifications
3 of 7 values have a recorded source- Type
- outboard_preamp·
- Added Gain dB
- 79✓
- Input Connector
- 3-Pin XLR (2 kΩ) + 1/4" TS (840 kΩ)·
- Output Connector
- 3-Pin XLR (600 Ω) + 1/4" TS (300 Ω)·
- Expert Description
- En: The single-valve box that has been on desks since the 1990s: 12AX7 stage, +48 V phantom, maximum input +14 to +22 dBu, maximum output +22 to +28 dBu, response 10 Hz to 30 kHz ±0.5 dB, equivalent input noise -129 dBu at high gain and -105 dBu at low. Powered from a 9 V AC adapter. · Uk: Той самий однолампний прилад, що стоїть на столах ще з 1990-х: каскад на 12AX7, +48 В фантомного, максимальний вхід від +14 до +22 dBu, максимальний вихід від +22 до +28 dBu, смуга 10 Гц – 30 кГц ±0,5 дБ, еквівалентний вхідний шум -129 dBu на великому підсиленні й -105 dBu на малому. Живлення від адаптера 9 В змінного струму.·
- Provides Phantom Power
- yes✓
- Requires Phantom Power
- no✓
Expert Audio Engineering Commentary
Gain Staging Advice
The published noise range is the honest part of the sheet: -129 dBu at high gain against -105 dBu at low. The same box is quiet or noisy depending on where you set it, and on a dynamic microphone you will hear the difference as hiss.
Production Warning
Retail listings for the Tube MP family routinely quote gain figures the maker does not print. Here ART's own table says "54dB - 79dB", while the sister model Tube MP Studio V3 is given as "50 dB - 60 dB" on the same site — two boxes from one family, two different published ranges.
What the datasheet actually says
Quoted verbatim from the manufacturer’s own page, with the date we checked it. We state what is printed, not what anyone intended by it.
««Maximum Gain: 54dB - 79dB» — у таблиці, де сусідні рядки подано парами XLR / джек: «Input Impedance: 2kΩ, 840kΩ», «Equivalent Input Noise: -129dBu (A weighted), -105dBu (A weighted)»»
The table lists two values in every row — one for the XLR input, one for the 1/4" input — separated by a comma, but the gain row uses an en dash instead, so the two numbers can be read as a range or as one figure per input. Nothing on the page says which. The catalogue takes the upper figure, 79 dB, and a buyer comparing this box with a preamp that publishes a single unambiguous gain should know that these two numbers are not the same kind of statement.
checked 8/5/2026* Estimated with the depreciation fallback (~82% retained value). · checked on 8/5/2026