What Does the Built-In Pre-Amp Do?

Well first let’s take a look at what a Pre-Amp does. The Pre-Amp electronically amplifies the weak analog signal picked up by the stylus and cartridge as it’s pressed on to the vinyl. The output signal is strong enough for other downstream processes such as power amplification yet is critical to have little to no noise degradation measured as signal-to-noise ratio (SNR).

By default, our Stir It Up turntable produces a PHONO output signal (Pre-amp OFF). However, if you want to connect directly into powered stereo systems and speakers you must supply a pre-amplified line level-signal (Pre-amp ON). Below are some common setups:

  • Turn Pre-Amp position to ON when using RCA cables to connect directly to powered speakers, such as when using with one of our House of Marley speakers
  • Turn Pre-Amp position to OFF when using RCA cables to connect to a third-party pre-amp or a stereo receiver that accepts a PHONO input.

Pre-Amp on Stir It Up Turntable - House of Marley

See below for full technical specs:

Type – Belt drive turntable, manual with auto start/stop
Motor – DC servo-controlled
Speeds – 33-1/3 RPM, 45 RPM
Turntable Platter – Aluminum Alloy
Wow and Flutter – Less than 0.3%
Signal-to-Noise Ratio – 50dB
Output Level – Pre-amp OFF “PHONO”: 5mV nominal @1kHz, -10dB); Pre-amp ON “LINE”: 250mV nominal @1kHz, -10dB)
Phono Pre-Amp Gain – 34dB nominal, RIAA equalized
Power Supply – Input: 100-240V AC, 50/60Hz, 0.3A
Output – 12VDC, 250mA, 3W
Dimensions – 420 mm (16.54″)W x 345mm (13.58”)L x 115mm (4.53”)H
Weight – 4.03kg (8.88lb)
Replacement Stylus – ATN3600L Tracking Force: 2.5-3.5g (AT3600L)
Cartridge Type – 1/2” mount
Headphone Jack – 3.5 mm (1/8” stereo (female)