Anthem AMP-2 Brochure

C D 1

P R E 1P

P R E 2L

I N T 2

A M P 1

A M P 2

Amp 2

“It’s refreshing to see a company focus in on details like the cosmetics and
symmetry of the front panels, first rate packaging set up instructions, quality

support materials, and, of course, high performance music playback. ...if

you become a member of the Anthem club, you’ll smile every time you
look at your equipment.”

“Anthem just sounds right. No matter what makes them tick, these products
were made to enrich our lives with glorious music.”

– Michael Fuschi

Audio Revolution Online Magazine, May 1998

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value without equal
performance beyond

e x p e c t a t i o n s

Developed as the mate to our award-winning PRE 1 L and PRE 2L
preamplifiers, the AMP 2 combines an all new hybrid design
with a robust, regulated power supply, sophisticated circuit
t o p o l o g y, conservative operating parameters and efficient i n d u s t r i a l
design practices, into one uncompromising, yet affordable, stereo
power amplifier product. The sonic result is an amplifier which
is both fast, and tonally neutral with the real power and control
to adequately drive even the most demanding speakers.

A M P 2

Stereo Hybrid Power Amplifier - 200 watts/ch

Introducing ANTHEM’s newest & most powerful amplifier - a high
power hybrid design combining the musicality and finesse of vacuum
tubes, with the solidity and control of solid-state. This next generation
product is uniquely capable of providing music enthusiasts with
extremely high value, and unprecedented sonic performance, which
successfully merges the strengths of both technologies.

Technical Overview

This 31dB gain design is comprised of 4 stages. First, a vacuum tube
buffer and phase splitter are used to provide a high input impedance
as well phase inversion for bridged mono configuration. Next, a constant
current sourced, double differential cascode input stage topology was
chosen due to its better balance between both halves of the input
stage, how it aids in power supply ripple rejection and because of its
excellent CMRR - all which combine to offer a very linear design, before
feedback. Third, a high current, Class A transconductance/driver
stage was chosen because of its drive capability and excellent slew
characteristics. Lastly, this is coupled to a cascode configured bipolar
output stage, utilizing 12 Motorola 150 watt devices per channel.
Overall, this amp has an unusually low amount of negative feedback
due to its intrinsic linearity and inherently low distortion open loop
characteristics.

Design Features

• Hybrid design

• Two tube input stage (mil-spec 6922’s)

• Solid-state driver stage

• Bi-polar transistor output stage (Motorola devices)

• >200 watts/ch into 8 ohms; >300 watts/ch into 4 ohms

• Bridgeable into mono (over 600 watts)

• 1.2kVA toroidal power transformer

All Anthem products are available with either black or silver faceplates.

Why settle for a product which compromises one sonic aspect for the
other. You can have the best of both worlds with ANTHEM’s next
generation products... a sublime combination of both power and
finesse which audiophile music lovers have long been searching for,
at a price never before thought possible!

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(AC line set at 117V 60Hz)

POWER OUTPUT 200 watts per channel continuous both

channels driven, into 8 Ohms
20Hz to 20kHz with < .05% THD+N
300 watts per channel continuous both
channels driven, into 4 Ohms
20Hz to 20kHz with < .1% THD+N
>600 watts/ch (8 ohms) - bridged mono mode

IMD ≤.05% at rated power
POWER BANDWIDTH 3Hz to 180kHz (-3 dB points)
THD+N ≤.05% at rated output into 8 ohms

≤.1% at rated output into 4 ohms

INPUT SENSITIVITY 1.1V for Rated Power
INPUT IMPEDANCE 100 Kohm

DAMPING FACTOR ≥200 on 8 Ohm tap
HUM AND NOISE -101 dB below rated power

IHF A-weighted

VOLTAGE GAIN 31.3 dB
RISE TIME < 2.0 µSec.
SLEW RATE 100 V/µSec.
POWER REQUIREMENTS 100-120VAC 50/60Hz

(Export 220-240VAC 50/60Hz)
1100 VA maximum

TUBE COMPLEMENT 2-6DJ8/6922
DIMENSIONS 19" (48 cm) W x 5.25" (13.5 cm) H

x 16” (50 cm) D

NET WEIGHT 55 Ibs. (25 kg) - unpacked

A M P 2

Specifications

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INTRINSIC JITTER < 140ps RMS measured over a bandwidth

of 10Hz-40kHz

POWER SUPPLY EI - Laminate power transformer featuring

9 stages of power supply regulation

TRANSPORT MECHANISM Sony (6 pack Vertical Changer)
D/A CONVERTER Dual Burr-Brown PCM 1702P
TUBE COMPLEMENT 1-6922/E88CC in a high speed output

buffer configuration

ANALOG OUTPUT 1- pair single ended RCA
D I G I TAL OUTPUT 1- AES/EBU on XLR male connector

1- S/PDIF Co-Ax on RCA connector

P R E 1P

FREQUENCY RESPONSE Phono Input: ± 0.5dB of RIAA 20Hz to

20kHz

HARMONIC DISTORTION <0.35% at 1V RMS at line output, 20Hz to

(THD+N)

I.M. DISTORTION (SMPTE) Line output <0.1% at 1V
GAIN RMS
INPUT IMPEDANCE 47K on Phono Input : 100pF
OUTPUT IMPEDANCE 520ohms. Recommended load 50K-100K

20kHz (typically <0.15% at midband)

: 48dB @ 1kHz

ohms and 100pF (20K ohms minimum,
1000pF maximum)

RATED OUTPUT 1V RMS 10Hz to 85kHz main outputs

(Maximum 44V RMS output at 0.5% THD at
1kHz into 100K ohm load with 1.7V RMS
high level input)

INFRA-RED OUTPUT 1 -via 3.5mm stereo jack
HDCD FILTER/DECODER Pacific Microsonics - PMD 100
FREQUENCY RESPONSE 5Hz-20Hz ±.25dB
“A” WEIGHTED S/N RATIO >-115 dB from 10Hz-20kHz
CROSS TALK -75dB @ 10kHz

(>-65dB from 20Hz-20kHz)

THD <.01% from 10Hz-20kHz
MAX. OUTPUT LEVEL Approx. 2 Volts
DIMENSIONS 19” Wide x 13” Deep x 5.25” High

(48 cm x 33 cm x 13 cm)

NET WEIGHT 24 lbs (11kg) - unpacked

CHANNEL SEPARATION < -65dB Below 1V @ 20kHz
PHASE POLARITY Non-inverting
NOISE -72dB IHF “A” Weighted Ref,

0.5V RMS Out, Shorted Input

TUBE COMPLEMENT Tube Audio Circuit: 2 - 6922/E88CC,

2-12AT7/ECC81

POWER REQUIREMENTS 120VAC 50/60Hz (Export 100/220/240VAC

50/60Hz) 36 VA maximum

DIMENSIONS 19” Wide x 11” Deep x 5.25” High

(48 cm x 28 cm x 13 cm)

NET WEIGHT 17.5 Ibs (8 kg) - unpacked

P R E 2L

INPUTS (6) CD, Tuner, Aux 1, Aux 2/Phono,

Tape, SSP

OUTPUTS (4) Tape, Power Amplifier,

1/4” Stereo Headphone Jack

CONTROLS (3) Input Select, Balance, Volume
SWITCHES (5) SSP, Tape/EPL (External Processor Loop),

Mono/Stereo, Mute/Operate, Power On/Off

FREQUENCY RESPONSE 2 Hz to 130 kHz

-

0.5 dB;

> 250 kHz -3.0 dB at 1VRMS output

THD & N (Output at 1V RMS) < 0.1% from 20 Hz to 20 kHz
GAIN Selectable, 24, 16 & 8dB @ 1kHz
INPUT IMPEDANCE 40k ohms
OUTPUT IMPEDANCE <135 ohms @ 1kHz, all gain settings.
RATED OUTPUT 1 VRMS

MAXIMUM OUTPUT VOLTA G E 30 VRMS at 1% THD
NOISE < 80µV unweighted wideband noise*

Approx. 60µV IHF A-weighted noise

-92 dB A-weighted below a 1 VRMS output

STEREO SEPARATION > -60dB @ 1kHz relative to 1VRMS output

(Crosstalk)

TUBE COMPLEMENT 4 - 6922 (6DJ8 types)
FUSE REQUIREMENTS (1) .5 A slow-blo (100-120VAC countries),

.25A slow-blo (220-240VAC countries)

POWER REQUIREMENTS 40VA Maximum, 100-120VAC 60Hz

(Export 220-240VAC 50/60Hz)

DIMENSIONS 19” Wide x 11” Deep x 5.25” High

(48 cm x 28 cm x 13 cm)

NET WEIGHT 20 lbs (9 kg) - unpacked

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I N T 2

INPUTS (6) CD, Tuner, Aux 1, Aux 2/Phono, Tape, SSP
OUTPUTS (4) Tape, Preamplifier, Main Power Amplifier, 1/4” Stereo Headphone Jack
CONTROLS (3) Input Select, Balance, Volume
SWITCHES (5) SSP, Tape/EPL (External Processor Loop), Mono/Stereo, Mute/Operate, Power On/Off
TUBE COMPLEMENT 2-6DJ8/6922
POWER REQUIREMENTS 100-120VAC 60Hz (Export 220-240VAC 50/60Hz) - 400VA
DIMENSIONS 19" (48 cm) W x 5.25" (13.5 cm) H x 16” (50 cm) D, Knobs extend 3/4" (1.9 cm) forward of panel
NET WEIGHT 38 Ibs, (17.2 kg) - unpacked

I N T E G R ATED AMPLIFIER SPECIFICAT I O N S

POWER AMPLIFIER SPECIFICAT I O N S

(SSP Input(s) to Main Speaker Output)

RATED POWER 90 Watts (25.5Vrms) into 8 ohms - continuous;

145 Watts (23Vrms) into 4 ohms;
both channels driven 20Hz to 20kHz
@ <1% THD&N

FREQUENCY RESPONSE -0.5dB 20Hz to 35kHz (@ 1W);

-3.0dB 10Hz to 95kHz (@ 1W)

SIGNAL TO NOISE RATIO ≤ -95dB (A-weighted ref 80W rated power);

≤ -90dB (Unweighted ref 80W rated power)

THD&N ≤ 0.1% 1kHz @ rated power ,

≤ 0.5% 30Hz to 15kHz @ rated power ,
≤ 1% 18Hz to 23kHz @ rated power

PHASE Non Inverting
INPUT IMPEDANCE 40k ohms (Line level inputs)
GAIN 39dB
SENSITIVITY 280mV input for rated power, 8 ohms

RATED POWER 90 Watts (25.5Vrms) into 8 ohms - continuous;

145 Watts (23Vrms) into 4 ohms;
both channels driven 20Hz to 20kHz
@ <1% THD&N

FREQUENCY RESPONSE -0.5dB 10Hz to 40kHz (1W);

-3.0dB 15Hz to 100kHz (1W);

SIGNAL TONOISE RATIO ≤ -100dB (A-weighted ref 80W rated power);

≤ -90dB (Unweighted ref 80W rated power)

THD&N ≤0.1% 20Hz to 20kHz @ rated power;
PHASE Polarity Non-inverting
INPUT IMPEDANCE 19k ohms (Power Amplifier Inputs)
DAMPING FACTOR ≥100 @ 8 ohms
GAIN 24dB (16x)
SENSITIVITY 1.6VRMS input for rated power

(Volume control @ maximum)

A M P 1

PREAMPLIFIER SPECIFI CAT I O N S

(Line Level Inputs to Pre Outputs)

INPUT IMPEDANCE ≥ 40k ohms (line level inputs)
OUTPUT IMPEDANCE 150 ohms (min. required load: 10k ohms)
FREQUENCY RESPONSE -0.5dB 20Hz to 90kHz,

-3.0dB 1Hz to 200kHz

SIGNAL TO NOISE RATIO ≤ -90dB (Unweighted ref 1V @ Pre Out);

≤ -95dB (A-weighted ref 1V @ Pre Out)

THD&N ≤0.01% 10Hz to 50kHz

(Ref 1V @ Pre Out)

PHASE Non Inverting
GAIN 15dB (5.7x)

POWER OUTPUT 40 watts per channel continuous both

channels driven, into 4 or 8 Ohms
(user selectable), 20Hz to 20kHz with
≤ 1% THD. Typical power at clipping
(1% THD @ 1kHz) 55 watts/ch.

IMD ≤ 1% at rated power, SMPTE 4:1 method
POWER BANDWIDTH 10Hz to 65kHz (-3 dB points)

(40 WAT T ) 15Hz to 33kHz (-0.5 dB points)

FREQUENCY RESPONSE 10Hz to 75kHz (-0.5 dB points)

(1 WAT T ) 2Hz to 105kHz (-3 dB points)
THD+N ≤ 1% at rated power, 20Hz to 20kHz

both channels driven. Typically .05%
1 kHz at 1 watt level

INPUT SENSITIVITY 1.3V for Rated Power
INPUT IMPEDANCE 100 Kohm
DAMPING FACTOR ≥ 14 on 8 Ohm tap

HUM AND NOISE -92 dB below rated power unweighted;

-100 dB below rated power IHF
A-weighted

VOLTAGE GAIN 22.8 dB
RISE TIME 2.8 uSec
POWER SUPPLY 57 Joules
ENERGY STORAGE
POWER REQUIREMENTS 100-120VAC 50/60Hz

(Export 220-240VAC 50/60Hz)
355 VA maximum

TUBE COMPLEMENT 2-12AU7A/ECC82, 1-12AX7/ECC83,

4-EL34/6CA7 (2 matched pairs)

DIMENSIONS 19" (48 cm) W x 5.25" (13.4 cm) H

x 12” (30 cm) D

NET WEIGHT 40 Ibs. (18 kg) - unpacked

Note: All measurements performed with an Audio Precision System Two test center.
Due to Sonic Frontiers desire to continually improve its products, specifications are subject to change without notice.

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L I N E 1

P R E A M P L I F I E R

L I N E 2

P R E A M P L I F I E R

CD 1 CD Changer

L I N E 3

P R E A M P L I F I E R

P O W E R 1

S T E R E O A M P L I F I E R

P O W E R 2

S T E R E O A M P L I F I E R

Pre 2L Linestage Preamp

Pre 1P Phono Stage

Integrated 2 Hybrid Integrated Amplifier

Amp 1 Stereo Power Amplifier

Amp 2 Hybrid Stereo Power Amplifier

T H E K E Y T O H I G H - E N D A U D I O

DES I GN ED & MA NUF ACT URE D BY SO NIC FRO NT I ER S

S F C D 1

C D P L A Y E R

T R A N S P O R T 3

C D T U R N T A B L E

P O W E R 3

M O N O A M P L I F I E R S

P H O N O 1

P H O N O S T A G E

P R O C E S S O R 3

D I G I T A L P R O C E S S O R

2 7 9 0 B R I G H T O N R O AD, O A K V ILL E , ONTA R I O, C A N A D A L 6 H 5T 4 TE L : ( 905 ) 8 29-38 3 8 FA X : (905 ) 8 2 9- 3 0 3 3
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SKU# 57414