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SOLID STATE AMPLIFIER
450 WATTS @ 4 OHMS
300 WATTS @ 8 OHMS
This PLINIUS SA-250 solid state, stereo amplifier is serial number 8612. We don’t know its vintage and we don’t have an indication which version it is. We recommend contacting the U.S. Distributor for more information: Elite Audio Video Distribution, 1027 N. Orange Drive, Los Angeles, CA 90038.
Please examine the photos – they are part of the description.
NOTE: This unit has been modified by Plinius with the addition of a gain control located on the back of the chassis.
The SA-250 sold for $14,495 in 2006.
The SA-250 has multiple operation modes. The options are:
RCA STEREO: This option provides a stereo output via both left and right output channels from a stereo signal connected to both left and right input RCA inputs.
RCA BRIDGED MONO: This option configures your amplifier to drive one loudspeaker from one unbalanced signal fed to the RIGHT RCA input. The loudspeaker is connected to both channels positive (+) output terminals, giving an available power in this mode four times the rated output of the amplifier, approximately 900 watts into 8 ohms. Special care must be taken in connecting the input signal and loudspeakers to ensure safe operation and best possible performance.
XLR STEREO: This option provides a stereo output signal from a balanced stereo input signal connected to both the left and right XLR inputs. All the advantages of balanced line transmission will be realized with good rejection of noise and some freedom from earth or ground loops (hum).
XLR BALANCED MONO: In this mode both channels of your Plinius SA-250 combine to operate as a true balanced mono amplifier, from input to output. This configuration provides the highest quality mono performance from a balanced line input connected to the RIGHT BALANCED XLR INPUT. As with RCA Bridged configuration, the loudspeaker is connected to both channels positive (+) output terminals. Available power in this mode is four times the rated output of the amplifier, approximately 900 watts RMS into 8 ohms. Special care must be taken in connecting the input signal and loudspeakers to ensure safe operation and best possible performance.
Balanced or unbalanced input options will depend on the type of signal available from your preamplifier or other equipment. The Plinius SA-250 provides both options to allow you to choose the most suitable preamplifier for your purposes. Plinius Preamplifiers offer both balanced and unbalanced output options.
BALANCED LINE is normally used to transmit signals in a professional environment. Because balanced line effectively reduces or eliminates noise pick-up by the system cabling, it has become increasingly more important in high-quality domestic high fidelity systems.
UNBALANCED leads such as single ended, RCA or coaxial are common and are used in the majority of audio signal systems. The terminal plug and socket are most commonly called RCA and can be found on your Plinius SA-250 for use as the standard input terminals for both left and right inputs.
OUTPUT TERMINALS – STEREO
Output connections for the loudspeakers are provided on the left and right hand side of the rear panel. Two parallel pairs of binding posts for each channel are fitted – these provide ease of use with bi-wiring and multiple cables requiring a large contact area.
OUTPUT TERMINALS – BRIDGED/MONO
In bridged/mono modes, the loudspeakers utilise only the positive (+) outputs of your Plinius SA-250. In this configuration power output to the loudspeakers is dramatically increased (around four times as much), and is commonly used in conjunction with another amplifier for amplification of each channel from the preamplifier.
Solid-state two-channel power amplifier. Output power (both channels driven, 20Hz–20kHz): 300Wpc RMS into 8 ohms (24.8dBW), 450Wpc RMS into 4 ohms (23.5dBW); 1000Wpc RMS into 8 ohms (30dBW) in bridged and true balanced mono modes. Frequency response: 20Hz–20kHz, ±0.2dB, 0dB at 0Hz, –3dB at 70kHz. Distortion: typically <0.05% THD at rated power, 0.1% THD and IM worst case prior to clipping. Current output: 70A short-duration peak per channel (fuse-protected). Risetime: typically <4µs. Input impedance: 47k ohms. Gain: 32dB on RCA inputs, 38dB on balanced inputs. Hum & noise: 100dB below rated output, 20Hz–20kHz, A-weighted.
The price of this SA-250 will include shipping to an address in the lower 48 states via truck.
PLEASE NOTE: I will ship this item anywhere in the UNITED STATES, but due to its value, I cannot ship this item to locations beyond the 50 United States. If you are outside the US and are interested in this unit, you will need to hire a freight forwarder to handle the export shipment due to the value – items valued above $2500 require a special license to export.
The shipping pallet will weigh 200 pounds and measure: 48 inches by 44 inches by 22 inches. Our postal code is 91723.
This unit operates with 120 volts AC. Buyers from outside of the United States should know in advance that PROFESSORMIKE does NOT change operating voltages, but that may be accomplished by a qualified technician once the unit has been purchased.
I will accept payments through PayPal OR cash upon pick up for this item if the buyer lives in the LOS ANGELES area. Furthermore, if an LA area buyer picks the SA-250 up, we will knock $400 off the price.
PROFESSORMIKE’S FIVE GOLDEN RULES:
1. We make the effort to accurately describe EVERY item that we sell.
2. We pack EVERY item so that it will arrive in the same condition as when we evaluated it.
3. We ALWAYS ship within 48 hours of payment.
4. We treat EVERY buyer with the courtesy and respect that we expect in return.
5. We treat EVERY transaction as if WE were buying it - we want EVERY buyer to be satisfied with his/her purchase.
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