Integrated amplifiers

The amplifier part of the device is built on Eigentakt HybridDigital class D modules, which develop power up to 200 Watts per channel, and Sabre chips with 32 bits are used in the DAC section, which also support Meridian's MQA format.

The output stages of the NAD M10 V3 integrated amplifier are based on HybridDigital assemblies with nCore technology, which provide 100 watts of continuous power (for loads with a nominal resistance of 8 and 4 ohms) and 160 watts of dynamic power (8 ohms) with virtually zero noise and distortion, according to NAD.

According to the developers, the circuitry in the C 700 is characterized by a minimum level of distortion and noise. They promise the output power of 2 × 80 watts on a constant basis and 2 ×120 watts at its peak.

The NAD C 700 v2 integrated amplifier is based on the C 700 model and looks almost identical to it. But inside there is an improved DAC from the same manufacturer — ESS Sabre. In addition, the novelty can correct the Dirac Live room.

Using Hypex modules allows you to connect devices with an impedance of 4 or 8 ohms, giving out 180 watts per channel. A DAC based on the ESS Labs Sabre ES9028 migrated to the NAD C 399 from the Master Series. It works with signals up to 32 bit/384 kHz.

NAD Electronics presented the C 389 integrated circuit at the High End exhibition in Munich. Like the NAD C 399 released last fall, the novelty received a modular design scheme — NAD Modular Design Construction, MDC2. The amplifier concept uses proprietary HybridDigital UcD circuitry in a balanced architecture. In addition, there is an ESS Sabre DAC on board, which processes PCM resolutions up to 32 bit/384 kHz.

The NAD C379 integrated amplifier is equipped with UcD output stages with proprietary HybridDigital technology, providing 80 watts of continuous power (when operating on a load with a nominal resistance of 4 and 8 ohms) and 120 watts of dynamic power for a load of 4 ohms.

The new NuPrime Class A+D hybrid amplification technologies deliver the essence and warmth of Class A amplification, as well as the efficiency and speed of Class D technology in an environment of immeasurable noise. The spacious, transparent, dynamic and luxuriously textured sound stage of the IDA-8 inspires confidence.

The amplifier is equipped with a built-in phono corrector for working with the pickup heads with a movable magnet (MM) with advanced input resistance and capacitance settings. The phono corrector circuit uses MUSES 8820 operational amplifiers. The input selector here is a relay one, which ensures minimal interference during switching. The volume control is stepwise, with 99 levels of gain.

The device is equipped with a separate AV input. Users will be able to select a fixed or variable gain on the line output. This will come in handy when the 3510 model is used in conjunction with the front-facing acoustics of a home theater. To ensure a "low noise level on the power supply buses to the amplification stage," the device received a hybrid power supply circuit.

The Exposure 2510 Integrated integrated amplifier has a concise design, but it takes into account everything that can affect the sound quality. The device is equipped with a powerful custom-made toroidal transformer capable of delivering a total power of up to 200 watts. This is enough to supply power to the terminal amplifiers, which produce 75 watts per channel in the 8th. The amplifier is equipped with dual output terminals, providing for the possibility of connecting speakers according to the bi-wiring scheme.

The Luxman L-595A SE integrated amplifier provides direct selection of the active input via large square keys. The volume, tone, and channel balance controls are rotary. Moreover, the gain level knob is illuminated with a soft LED light. The case is covered from above by a 6 mm thick aluminum plate with ventilation holes for efficient heat dissipation.

The L-505uXll received the latest version of the proprietary negative feedback circuit, ODNF4.0, (the L-505uX had version 2.3), with improved high-frequency performance and reduced output impedance. The output stage of the preamplifier has the same discrete element buffer circuit as the flagship C-900u, which improves the ability to efficiently work with the power amplification section while maintaining the purity of delicate musical signals.

The Luxman L-505Z integrated amplifier, like the older L-509Z and L-507Z models, implements proprietary LIFES technology, which is an integral part of the Luxman next-generation amplifier circuitry. LIFES (Luxman Integrated Feedback Engine System) is based on the ODNF (Only Distortion Negative Feedback) feedback concept, which provides excellent performance without feeding any musical input signals back to the input of the main amplifier.

The Luxman L-550AX II is a modified version (Mark 2) of the L-550AX amplifier, released in 2011. The L-550AX II debuts with a precision electronically controlled LECUA attenuator and the latest version of the proprietary Distortion-Only Negative Feedback circuit, ODNF 4.0, which are used in Luxman's highest-end amplifiers.

The Luxman L-507UX Mark II is equipped with a new LECUA 1000 attenuator and a buffer circuit on discrete elements in the output stage of the preamplifier, and is also equipped with a new version (Version 4.0) of the LUXMAN ODNF feedback circuit (with distortion–only Negative Feedback).

The Luxman L-590AXII is a new flagship in the proprietary integrated amplifier series, operating in the pure A-class. The device continues the evolutionary line of the L-590AX and embodies the best practices of the company over the past fifty years.

The Luxman L-507Z integrated amplifier combines advanced technology and rich functionality, going far beyond its price segment in terms of acoustic capabilities, Luxman claims. The novelty is the first model in the Z series, which the manufacturer calls innovative. The company's pretentiousness is based on the successor to the ODNF feedback circuit, which has been present in Luxman amplifiers since 1999. It was replaced by the LIFES scheme, developed through painstaking research. The technology debuts in the L-507Z.

The device also uses the original LUXMAN ODNF feedback circuit (with negative feedback only based on distortion) and a power supply with independent storage capacitors for the left and right channels, as well as many circuit solutions commonly used only in the highest-end models, which together ensures high-quality music playback.

The Luxman L-509Z power amplifier consists of three cascades of four parallel transistors operating in a push-pull mode. The output power declared by the manufacturer is 220 watts when operating on a load with a nominal resistance of 4 ohms for each channel.