Reviews High Input Impedance

Alpine PDX-V9, 5-Channel Extreme Power Density Digital Amplifier w/Alpine RUX-KNOB.2 Remote Bass Level Control

MD 12000.1 – 0.5 ohm amplifier is developed with the highest technology and performance for automotive sound systems, in white color, to make your system more sophisticated, It is mono, with a single channel with a maximum power of 12.000 Watts RMS..
It is a FULL RANGE amplifier, playing all frequencies in the right measure for you, Operation class Class D, Number of Channels 01, Maximum power @ 12.6 VDC – 0.5 OHM: 12,000W RMS @ 12.6 VDC – 1 OHM: 7,200W RMS.
Input Sensitivity 220mV, Signal to Noise Ratio >95dB, Frequency Response 10 Hz ~5 kHz (-3dB), Crossover high pass (HPF) 10 Hz ~90 Hz (-12dB/8th) Variable, Crossover low pass (LPF) 90 Hz ~5 kHz (-12dB/8th) Variable, Bass Boost Freq.: 35 Hz ~55 Hz.
Boost: 0 ~10dB, Efficiency 79%, Input Impedance 15K ohms, Output Impedance 0,5 ohm, Protection system Output Short circuit, Output Short circuit in relation to the GND, Low Impedance Protection / High or Low voltage Protection / Thermal protection.
Maximum Power Supply Voltage 16VDC, Consumption at rest 3.6A, Maximum music consumption 602.5A, Maximum consumption in sinusoidal signal 1,205A, Dimensions (H x W x D) 8.976 x 2.755 x 21.653 inches (228 x 70 x 550mm), Weight 17.526 lbs (7.95 kg).

Mono: 1 x Taramps Electronics MD5000.2 Full Range 2 Ohms 5000W Amplifier.
Operation Class: Class D Channels - 2 Ohms: 5000W.
Input Impedance: 10K Ohms Output Impedance: 2 Ohms.
MD 5000.2 amplifier from Taramp's is intended for high-performance automotive audio systems and high-performance engineering.

【Equipped with two speakers】35-Watt Drum Amplifier that with TWO Speakers(LF:8-inch woofer, HF:2.5-inch tweeter, Impedance: 4 ohms ) provides rich tone with intuitive controls.1/4"DI Out:Audio output port, which can be connected to other speakers through audio cable to provide audio input to other speakers..
【Unique-Design for Electronic Drums】Use for Electric Drum practice, street performance, karaoke with friends, band performance, outdoors playing.Frequency response ranges from 20 to 20KHZ.Musical instrument input which can be connected to 'electronic drum', 'keyboard', etc..
【Multi-function Wireless control button】High-Efficiency and Super Durability.Extremely versatile 2-channel Drum amplifier.two inputs with separate volume control for each channel.Controls: 2-Volume, Treble,Middle, Bass.AUX-Volume,Wireless audio connection..
【Two channels】Two 1/4" Instrument Input, 3-Band EQ, 1/8" Auxiliary Input Jack for Jam-Along with Media Player or CD, 1/8" Headphone Output Jack for Silent Practice.DI output port for external active speakers.Audio output port, which can be connected to other speakers through audio cable to provide audio input to other speakers..
【Supporting microphone Input】Dynamic Mic Mode/Line in Mode. Supporting micropho....

...-Back Recording Studio Monitor Headphones/Swivel. (1) RockvilIe HeadRock Battery Powered Rechargeable Personal Headphone Amplifier Amp. Features: AKG K182 Professional Closed-Back Recording Studio Monitor Headphones. Audio Frequency Bandwidth: 10 Hz - 28 kHz. Sensitivity: 112 dB SPL/V. Max Input Power: 500mW. Input Impedance: 32 Ohms.
Product Weight: 0.56 Lbs. Cable Length: 3 meters. High Sensitivity 50mm Transducers: Provide great sound even with mobile devices. Headphone Type: Closed-Back. Over Ear Design with replaceable ear pads. Detachable cable and screw-on adapter. Foldable. Detachable Cable. Applications: Studio Monitoring, Studio Mixing, Live Performance, Drummer, Mobile Devices. Includes: (1) x headphone amp.
(1) x Micro USB cable. (1) 3.5mm male to male audio jack cable. Manual and warranty card. Features: RockvilIe HeadRock Battery Powered Rechargeable Personal Headphone Amplifier. 3.5MM headphone output. 3.5MM aux input for music player. Lithium Battery with 800mAh capacity. Rechargable battery lasts 5-8 hours per charge. Headphone Amplifier Works with 16 300 Ohm Impedance.

Clean and neutral sound with a wide variety of signal sources.
High impedance 1/4″ instrument inputs optimized for guitar pickups allowing every nuance to be heard.
High quality 12AX7A tube inside to add warmth to musical dynamics.
External power supply to keep AC line noise and hum back at the wall.
Input Gain control and switch to maximize input dynamic range and s control tube drive Input.

Removes AC hum and noise - fast, easy and reliable.
Breaks ground loops safely, while keeping highest sonic quality.
2 independent channels for 2 mono or 1 stereo signal.
Automatically converts unbalanced to balanced signals without signal loss.
3-Year Warranty Program* 200 Watts of powerful, high-quality sound for audiences of up to 500 people. Input impedance approximately 500 k omega, Output impedance approximately 600 omega.

The TL081CP JFET-input operational amplifier family is designed to offer a wider selection than any previously developed operational amplifier family. Each of these JFET-input operational amplifiers incorporates well-matched, high-voltage JFET and bipolar transistors in a monolithic integrated circuit..
Low Power Consumption: 1.4 mA/ch Typical, Low Input Bias Current: 30 pA, Typical Low Input Offset Current: 5 pA Typical, High Slew Rate: 13 V/μs Typical.
Output Short-Circuit Protection, Low Total Harmonic Distortion: 0.003% Typical, Wide Common-Mode and Differential Voltage Ranges, Common-Mode Input Voltage Range Includes VCC+.
High Input Impedance: JFET Input Stage, Latch-Up-Free Operation.
Example Applications: Tablets, White goods, Personal electronics, Computers.

Rockville REQ231 Dual 31 Band 1/3 Octave Graphic Equalizer With Sub-Output. Dual channel (31 bands per channel). Variable stage low and high cut filters..
1/3 octave filter sets (ISO centers). 20 Hz to 20 kHz effective equalization range. Constant Q filters. Selectable 6dB or 12dB cut or boost range. Output level LEDs (-10 to +17 dB)..
Bypass switch with status LED. Balanced XLR input/output. Subwoofer out. Channels: 2 (stereo). Connectors: XLR balanced inputs and outputs. Bands: 31 per channel..
Frequency Centers: 20 Hz, 25 Hz, 31.5 Hz, 40 Hz, 50 Hz, 63 Hz, 80 Hz, 100 Hz, 125 Hz, 160 Hz, 200 Hz, 250 Hz, 315 Hz, 400 Hz, 500 Hz, 630 Hz, 800 Hz, 1 kHz, 1.25 kHz, 1.5 kHz, 2 kHz, 2.5 kHz.
Control Range: Selectable +/-12dB 0r +/-6dB. Input Impedance: 50k ohms. Output Impedance: 600 ohms. Maximum Output Level: +21dBLevel Control: +/- 10 dB. Signal to Noise: 003e93 dB. Distortion: 0.005%..