Integrated Amplifiers

The Aavik I-180 is an integrated amplifier made by Aavik, with five single-ended RCA line inputs, one RCA pre-output, and speaker terminals supporting spade connectors or 4 mm banana plugs. Its UMAC switching-amplifier topology uses sine-wave PWM modulation and dual mixed-mode feedback; output is rated at 2 × 300 W into 8 ohms and 2 × 600 W into 4 ohms, with THD+N below 0.006% from 1–100 W at 1 kHz into 8 ohms. The unit includes a resonant-mode sine-wave power supply, 36 active Tesla coils, 96 active square Tesla coils, five dither circuits, four anti-aerial-resonance coils, and an enclosure using a natural-based composite material with minimal aluminium.

The Aavik I‑188 is an integrated amplifier made by Aavik in Denmark, using a Class D topology with Pascal modules. It delivers 2 × 300 W into 8 Ω and 2 × 600 W into 4 Ω, with five single-ended analog inputs, 10,000 Ω input impedance, and 50 Ω output impedance. The amplifier features an Aavic resonant power supply, noise-reduction technologies, a composite anti-vibration housing, and total harmonic distortion plus noise of 0.0028%.

Danish class D integrated built on a modified Pascal UMAC module with resonant-mode power supply and Tesla-coil noise reduction.

The Aavik I-288 is an integrated amplifier made by Aavik, using the latest Pascal Class D amplifier technology with UMAC switching modulation, a resonant-mode power supply, and an inverted amplifier topology. It provides 2 × 300 W into 8 ohms or 2 × 600 W into 4 ohms, with 0.0028% THD+N at 1 W, 1 kHz, 8 ohms, and 50-ohm output impedance. Features include a titanium knurled control dial, fully analog active low- and high-pass crossover modules, 72 active Tesla coils, 168 active square Tesla coils, seven dither circuits, and five anti-aerial-resonance coils.

The Aavik I-580 is a Class D line-stage integrated amplifier made by Aavik Acoustics of Aalborg, Denmark. It uses Pascal amplifier modules with modified input and output stages, optimized input switching, five RCA line inputs, one RCA pre-out, and one loudspeaker output via screw terminals, rated at 2 × 600 W into 4 ohms. Its housing uses a hard, metal-free material similar to MDF, with titanium corner cylinders and cross-cover structure, copper sheets around the electronics, and Ansuz active Tesla coils, active square Tesla coils, analog dither circuitry, and anti-aerial resonance coils.

The Aavik I-588 is a stereo integrated amplifier made by Aavik, an Audio Group Denmark brand, with Pascal Class D output modules rated at 2 × 300 W into 8 Ω and 2 × 600 W into 4 Ω. It has five RCA line inputs, a Main In, a Pre Out, single-wire speaker terminals, and analog Low Pass and High Pass outputs with menu-selectable 30–80 Hz crossover frequencies in 11 steps; the low-pass level is adjustable by ±6 dB in 0.25 dB increments. Its design includes 348 active Tesla coils, 17 analog dithering circuits, resonance optimization, and a matte-finished enclosure with a gently curved front designed by Flemming E. Rasmussen.

The Aavik I-880 is a transistor integrated amplifier made by Aavik Acoustics, rated at 200 W per channel into 8 ohms and 400 W per channel into 4 ohms, with a 155 × 580 × 510 mm footprint and 36 kg weight. Its push-pull output stage operates in class A, using four pairs of Toshiba bipolar transistors per channel driven by lateral Exicon MOSFETs, while four 500 W self-resonant switching power supplies can deliver up to 80 A in total. The enclosure combines steel, tempered glass, titanium, copper, and high-density fiberboard, and the amplifier includes five line inputs, pre and main outputs, and fully analog high-pass/low-pass crossover outputs.

The Aavik U-180 is an integrated amplifier and DAC made by Aavik, rated at 2 × 300 W into 8 ohms and 2 × 600 W into 4 ohms. Its DAC section has five digital inputs, asynchronous sample-rate conversion and reclocking to 200 kHz/24-bit PCM, while the amplifier uses UMAC™ technology with sine-wave PWM generation and dual mixed-mode feedback. The unit uses a natural-based composite cabinet with minimal aluminum, a shared amplifier/DAC mainboard, 36 active Tesla coils, 88 active square Tesla coils, and a differential floating DAC current-to-voltage topology with virtual ground.

Aavik U-188 is an all-in-one unity amplifier made by Aavik, an Audio Group Denmark brand, integrating a streamer, DAC, preamplifier, and stereo power amplifier. Its power section uses a Pascal L-PRO2 UMAC class-D module with an embedded power supply, delivering 300/600 W per channel into 8/4 Ω; it supports PCM up to 24-bit/192 kHz via S/PDIF, up to 32-bit/384 kHz and DSD128 via USB, and includes UPnP, DLNA, Spotify Connect, Tidal Connect, and Roon-ready streaming. The enclosure combines external steel, wood-based laminate, and internal copper shielding, with a titanium volume/source-control ring, 36×/72× active/squared Tesla coils, zirconium-rod anti-aerial-resonance coils, a Sabre DAC, and analog resistor-ladder volume attenuation.

The Aavik U-280 Unity amplifier is an integrated amplifier and DAC manufactured by Aavik, rated at 2 × 300 W into 8 ohms with 0.006% distortion. It uses Aavik’s UMAC™ amplifier topology with sine-wave PWM generation and dual mixed-mode feedback, a common amplifier/DAC mainboard, five digital inputs supporting PCM 24-bit/32–192 kHz and MQA, and USB support for DSD64/128. The unit has a natural-based composite enclosure designed to reduce mechanical resonance, a resonant-mode power supply, differential floating current-to-voltage conversion with virtual ground, and 72 active Tesla coils.

The Aavik U-288 is an integrated amplifier combining a streamer, DAC, line stage, and power amplifier in one enclosure. It uses Pascal Class D amplifier technology with UMAC switching modulation, and includes active Tesla coils, 144 active square Tesla coils, six dither-circuitry units, and eight anti-aerial-resonance coils for noise reduction. Its speaker output is rated at 2 × 300 W into 8 ohms or 2 × 600 W into 4 ohms, with 0.0028% THD+N at 1 W, 1 kHz, 8 ohms; digital inputs support PCM up to 32-bit/384 kHz, MQA, DSD64, and DSD128.

The Aavik U-301 is a fully integrated amplifier made by Aavik, combining streaming, digital-to-analog conversion, preamplification, and power amplification in one enclosure. Its amplification stage uses advanced Pascal Class D technology with high-speed UMAC modulation, delivering 2 × 300 W into 8 Ω and 2 × 600 W into 4 Ω; it includes a power-factor-corrected resonant-mode switching power supply and Ansuz Gold Anti-Aerial Resonance Coil technology in the internal wiring. The enclosure combines an aluminium frame and cooling elements with thick wood-based laminate top and bottom plates, and includes a large LCD display, a front-mounted control knob, three pushbuttons, and Ansuz Darkz Feet.

The Aavik U-580 is an integrated amplifier and DAC made by Aavik, rated at 2 × 300 W into 8 ohms and 2 × 600 W into 4 ohms, with distortion below 0.006% (THD+N, 1–100 W, 1 kHz, 8 ohms). Its UMAC™ amplifier uses sine-wave PWM modulation and dual mixed-mode feedback, while the DAC provides two BNC S/PDIF, two TOSLINK, and one USB input, with PCM support up to 24-bit/192 kHz, MQA support, and USB DSD64/128 support. The unit has a common amplifier-and-DAC mainboard, an asynchronous sample-rate converter re-clocking digital inputs to 200 kHz/24-bit PCM, a natural-based composite cabinet, and a solid-copper inner chassis, plus 108 active Tesla coils, 232 active square Tesla coils, 11 dither circuits, and 4 anti-aerial-resonance coils.

The E-800 sits at the top of Accuphase's integrated-amplifier lineup, pairing the company's Balanced AAVA (Accuphase Analog Vari-gain Amplifier) volume control with a fully balanced power stage configured as an instrumentation amplifier using six-fold parallel push-pull power MOSFETs biased in pure Class A. Its linear power progression and extremely high damping factor of 1000 give it separates-level performance in a single chassis.

Class-AB integrated amplifier with selective input buffering and high-performance analog signal path

The Ampsandsound Red October is a 300B-based personal-audio tube integrated amplifier with a single-gain-stage, zero-feedback, single-ended topology and a 12AX7 input tube. It uses point-to-point wiring, turret boards, tube-rectified dual-mono power supplies, separate power and output transformers, Jupiter foil-wax coupling capacitors, and a 24-step attenuator; transformer taps provide five output impedances for headphone matching. Inputs comprise single-ended RCA and transformer-coupled XLR connections, with headphone outputs and 8-ohm speaker binding posts delivering up to 8 W RMS at 8 ohms and 6.2 W RMS at 32 ohms; the 10 Hz–24 kHz bandwidth is specified at 1 W and −2 dB.

The Ansuz PowerBox D-TC Gold Signature is a power box made by Ansuz for delivering low voltage to cables and speakers, with IEC C14 230/110 V input and Line/digital Speaker output. It uses a natural-based composite cabinet, a sandwich bottom plate with a heavy compact laminate panel and titanium layers, and shielded gold- and silver-plated copper conductors. Its topology includes 140 active square Tesla coils, two active cable Tesla coils, four-generation-3 dither circuitry, two passive cable Tesla coils, and an active zirconium Tesla coil; dimensions are 272 × 397 × 97 mm and weight is 4 kg.

The Ansuz PowerBox D-TC Supreme is a power box made by Ansuz, designed to deliver low voltage to cables and speakers through noise-reduction and resonance-control circuitry. It uses a natural-based composite cabinet material developed to reduce mechanical resonance and minimize the sonic influence of aluminum, with double-inverted Tesla coils comprising opposing spiral and counter-coils; its topology includes active square Tesla coils embedded in the circuit boards, active and passive cable Tesla coils, and analog dither circuitry. The unit contains 168 active square Tesla coils, 2 active cable Tesla coils, 5 dither circuits, 2 passive cable Tesla coils, and 60 active Tesla coils, and has an IEC C14 230/110 V input, line/digital/speaker outputs, dimensions of 262 × 378 × 69 mm (10.31 × 14.88 × 2.72 inches), and a weight of 4 kg (8.8 lb).

The Ansuz PowerBox D2 is a low-voltage power unit made by Ansuz for supplying cables and speakers. It uses 120 active square Tesla coils embedded in printed circuit boards, 3 analog dither circuits, 2 active cable Tesla coils, 2 passive cable Tesla coils, and a natural-based composite cabinet material designed to reduce mechanical resonance and hysteresis.

The Ansuz PowerBox D3 is a low-voltage power-distribution unit manufactured by Ansuz. It uses 120 active square Tesla coils, 2 active cable Tesla coils, 3rd-generation analog dither circuitry, 2 passive cable Tesla coils, 3 anti-aerial-resonance Tesla coils, and an active Tesla coil. Its cabinet uses a natural-based composite material designed to reduce mechanical resonance; dimensions are 97 × 272 × 397 mm, weight is 3.85 kg, input is IEC C14 110/240 V, and outputs include line/digital mini-jacks, phono mini-jacks, and speaker barrel DC jacks.

The Ansuz Sortz C3 is a passive noise-control unit made by Ansuz in Denmark for installation in open audio inputs and outputs. It uses a copper-based construction with GOLD AARC technology, comprising double-wound silver/gold-plated copper coils for RF-noise reduction and a zirconium rod for resonance control and tonal balance. It is available with RCA, XLR male or female, BNC, USB, and LAN terminations.

The Ansuz Sortz S3 is a noise-reduction termination plug made by Ansuz in Denmark for open input and output sockets in electronic devices. It uses Gold Anti-Aerial Resonance Coil technology with dual-wound silver/gold-layered copper coils and a zirconium rod, designed to absorb airborne RF interference and reduce cable sensitivity to it. The plug measures 13 × 76.4 mm and is available with RCA, BNC, XLR female/male, USB, or LAN terminations; its length when plugged in is 69.7 mm.

The Ansuz Sortz T3 is a noise-reduction termination plug for open input and output sockets in electronic devices, made in Denmark by Ansuz. It uses Gold Anti-Aerial Resonance Coil technology with dual-wound coils, a zirconium rod, and silver/gold-layered copper coils; the plugs also undergo cryogenic treatment at approximately −321°F (−196°C). Dimensions are 13 × 76.4 mm (0.51 × 3.01 in), with a plugged-in length of 69.7 mm (2.74 in), and terminations available for RCA, BNC, XLR female/male, USB, and LAN.

The Ansuz Sparkz C3 is a mains-socket noise-reduction device made by Ansuz, designed to plug into unused mains sockets. It uses a Bakelite housing, one Gold Anti-Aerial Resonance Coil, one zirconium bar, silver/gold-layered copper coils, and third-generation analog dither technology. Its active Tesla-coil topology uses two oppositely wound coils—a regular spiral and its mirrored counterpart—to generate counter-surges against voltage spikes; dimensions are 39.4 × 71.2 mm (1.55 × 2.80 inches).