TEAC NR-7CD

TEAC-made CD drive mechanism, provides high performance and reliability

The audio CD drive mechanism used, one that we have designed and manufactured ourselves, has a proven track record, having been used in many professional CD players. You can easily continue to enjoy your CD collection together with that format’s traditional ease of use. In addition, upconversion with RDOT-NEO interpolates analogous data for frequencies above 20 kHz, which is not recorded on CDs, allowing you to enjoy smooth and rich sound that is closer to the original source.

New Vintage design evokes classic styles while also feeling contemporary

New Vintage design

Vintage audio design has been appreciated over the decades because the universal appeal of classic audio components is timeless. Using classic but functional audio equipment as a design guide, we re-interpreted it to take account of modern sensibilities and to sit well in modern living spaces.

Large peak power meters

Large peak power meters are located on the front panel. The movement of the meter needles allows you to see and visibly "feel" the dynamics of the music. The meter lighting can be adjusted via a dimmer function and set to three levels of brightness or turned off altogether. The meters emit a warm light, allowing the amplifier's presence to act as an interior lighting accent.

Side panels with a rounded design

The side panels, a key visual feature of the Reference Series design, are fabricated from 12mm thick aluminum. These thick panels increase the rigidity and vibration resistance of the chassis. Viewed from the front, the panels have rounded forms that draw gentle arcs in a design that simultaneously evokes a sense of both solidity and elegance.

Presenting a new A3 size

Many full-size components are significantly deep, requiring users to consider placement space before installation. Even though the is full-size, it occupies approximately the same footprint as a piece of A3 paper, with a depth of just 30 cm, making it relatively easy to locate. This enables placement on shallow shelves, in racks and other convenient locations. This also leaves plenty of space for attaching cables to the back.
Display

The display uses organic EL technology. Large numerals are used to indicate volume control and are shown on as much of the display area as possible, making them easy to see and allowing comfortable operation even from a distance. The display also shows the sampling frequency of the song being played back (supported for network and digital inputs). The track number, playback time and other information messages are shown during CD playback. The dimmer function allows the display to be set to three brightness levels or turned off.

* Song data during network playback is only shown in the control app.

Precision-cut aluminum knobs use high-precision bearings

Precision-cut aluminum knobs are used for the volume and selector controls. They are attached using high-precision bearings, giving a luxurious feeling to the touch.

Design for high audio quality (Sound Technology)

Full Stage Dual Mono Differential Circuit

Transmission is fully balanced at every stage in the preamp and power amplifier sections, minimising and eliminating commonmode noise. As a result, audio signals are transmitted with as little noise as possible and possess outstanding S/N ratios. What’s more, the left and right channel circuits are completely independent from the D/A converter to the power amplifier. Using this dual mono configuration minimises interference between the two channels and achieves outstanding channel separation. This allows you to enjoy a realistic soundstage that makes you feel as if you are right next to the performers. It also makes moments of silence feel truly still.

Dual mono D/A converter

Quality DAC chips are crucial for digital audio. For this dual mono configuration, two VERITA AK4490 DACs have been used for the left and right channels. These DACs are made by Asahi Kasei Microdevices Corporation and have an excellent reputation when used in high-end audio equipment. By keeping channels independent from the DAC section, high channel separation is maintained.

Power amplifier with independent left and right channels

In a BTL configuration, one highly-regarded 50ASX2 Class-D stereo power amplifier made by ICEpower is used in each of the left and right channels. This achieves a maximum output of 140 W + 140 W (at 4 Ω). With high linearity and high speed, sound is beautifully delivered with power to spare.
TEAC-OVCS (Octa Volume Control System)

RDOT-NEO (Refined Digital Output Technology NEO)

The FPGA (programmable IC), an original TEAC design, uses a fluency algorithm that smoothly augments digital audio signals. This enables upconversion of PCM digital signals 2, 4 or even 8 times as well as DSD upconversion. Using this function, you can easily experience the dense sense of air that DSD files have when playing back your own CD archives. During CD playback, signals are upconverted to the 11.2MHz DSD format, which contains about 256 times more data than standard CD audio. This method is truly outstanding at recreating natural tone and a soundstage that resembles live performance. You can hear the music reverberate naturally and feel the differences in resolution and reverberations, especially so when instruments overlap. 48kHz PCM audio sources can also be played back at 384kHz PCM or 12.2MHz DSD.

RDOT, which applies an analogous interpolation method using fluency logic, is a technology that was developed to enable the playback of the frequencies higher than 20kHz that are lost by the 44.1kHz/16-bit CD format. Based on the information read from the CD, analogous data is generated between the waveform samples. As a result, data above 20kHz is also generated. RDOT-NEO doesn’t just work for PCM upconversion, it also enables conversion to the DSD format.

Chassis construction designed for high rigidity

A double deck structure is used, one that separates analogue and digital sections into top and bottom. The middle chassis is welded to the side panels, increasing the rigidity of the entire chassis and reducing the vibration of parts and minimising unwanted vibrations from outside. This also provides a very effective shield that prevents interference between the analogue and digital sections.

AMAC (Aluminum-Block Mounted Amplifier Construction)

The DAC and the preamp are mounted on one side of a very-rigid 10mm-thick aluminum block, and the power amplifier module is mounted on the other side. This structure transmits analogue signals by the shortest route possible and increases the shielding effect to suppress the influence of noise while also enhancing heat dispersion from the power amplifier.

 The 3.5mm 4-pole headphone jack supports separate left and right grounding

L/R ground separation is supported by the 3.5mm 4-pole separate ground jack. Connecting compatible headphones or earphones with a 3.5mm 4-pole plug will increase left and right channel separation, allowing you to enjoy outstanding stereo imaging when listening with headphones.
* You can also use headphones with standard 3.5mm 3-pole plugs as is.

TEAC-HCLD headphone amplifier

A TEAC-HCLD (High-Current Line Driver) buffer amplifier is used for the headphone amplifier. This is also used in our UD-503, which has an established reputation as a DAC/headphone amplifier. It enables 500mW+500mW maximum output (into 32Ω load, THD 1%). This headphone amp can even drive 600Ω high-impedance headphones, which are difficult to power, with ease.

Custom EI core transformer with separate left and right windings

The digital, preamp and power amplifier sections each have independent power transformer taps. A dual mode structure has been implemented in the power supply by using a custom EI core transformer with separate left and right windings especially for the preamp section.

Current stabilization circuit

Separate dedicated 44.1kHz and 48kHz master clocks are built in. The effect of jitter on audio quality is greatly suppressed and the original sound is reproduced faithfully by using audio grade, high-precision crystal oscillators, featuring low phase noise, on input signals with sampling frequencies that are whole number multiples.

Digital/analogue isolation

Interference from the digital section on signals in the analogue section can cause various types of noise. In order to eliminate as much of this as possible, the analogue circuit, after the digital section and the D/A converter, is separated by an isolator and the purity of the analogue signal is maintained by electrical isolation.

 Specifications of TEAC NR-7CD

• Supported disc types : CD, CD-R, CD-RW (12cm, 8cm)
• Playback file format : CD-DA
• Sampling frequency : 44.1 kHz
• Quantization bit depth : 16bit
• DSD(DoP) : 2.8MHz
• Linear PCM : 32 to 192kHz, 16bit/24bit
• Standby power consumption : 0.5W or less
• Dimensions : 442(W) × 152(H) × 345(D) mm (excluding protrusions)
• Net Weight : About 13.4kg
• Operating Temerature : +5℃ to +35℃
• Operating humidity range : 5% to 85% (without condensation)
• Storage Temerature : -20 to +55˚C
• Accessory : Power cord × 1, Remote control (RC-1328) × 1, Remote control batteries (AAA) × 2, Owner's Manual (including warranty) × 1, Cushioning felt for feet × 3

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